13967221489 has 9 divisors (see below), whose sum is σ = 15125933259. Its totient is φ = 12891401640.

The previous prime is 13967221487. The next prime is 13967221507. The reversal of 13967221489 is 98412276931.

The square root of 13967221489 is 118183.

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

It can be written as a sum of positive squares in only one way, i.e., 2066157025 + 11901064464 = 45455^2 + 109092^2 .

It is not a de Polignac number, because 13967221489 - 2¹ = 13967221487 is a prime.

It is a super-2 number, since 2×13967221489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13967221481) 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, 1531834 + ... + 1540924.

It is an arithmetic number, because the mean of its divisors is an integer number (1680659251).

Almost surely, 2^13967221489 is an apocalyptic number.

13967221489 is the 118183-rd square number.

13967221489 is the 59092-nd centered octagonal number.

It is an amenable number.

13967221489 is a deficient number, since it is larger than the sum of its proper divisors (1158711770).

13967221489 is an frugal number, since it uses more digits than its factorization.

13967221489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18208 (or 9104 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

It can be divided in two parts, 139672 and 21489, that added together give a palindrome (161161).

The spelling of 13967221489 in words is "thirteen billion, nine hundred sixty-seven million, two hundred twenty-one thousand, four hundred eighty-nine".