862972255369 has 9 divisors (see below), whose sum is σ = 1003873249287. Its totient is φ = 739684930824.

The previous prime is 862972255357. The next prime is 862972255373. The reversal of 862972255369 is 963552279268.

The square root of 862972255369 is 928963.

It is a perfect power (a square), and thus also a powerful number.

862972255369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 665143006969 + 197829248400 = 815563^2 + 444780^2 .

It is not a de Polignac number, because 862972255369 - 2¹¹ = 862972253321 is a prime.

It is a super-2 number, since 2×862972255369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 862972255369.

It is not an unprimeable number, because it can be changed into a prime (862972255319) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6436387 + ... + 6569095.

It is an arithmetic number, because the mean of its divisors is an integer number (111541472143).

Almost surely, 2^862972255369 is an apocalyptic number.

862972255369 is the 928963-rd square number.

862972255369 is the 464482-nd centered octagonal number.

It is an amenable number.

862972255369 is a deficient number, since it is larger than the sum of its proper divisors (140900993918).

862972255369 is an frugal number, since it uses more digits than its factorization.

862972255369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265432 (or 132716 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 64.

Multiplying 862972255369 by its sum of digits (64), we get a square (55230224343616 = 7431704²).

The spelling of 862972255369 in words is "eight hundred sixty-two billion, nine hundred seventy-two million, two hundred fifty-five thousand, three hundred sixty-nine".