862977893 has 4 divisors (see below), whose sum is σ = 863041740. Its totient is φ = 862914048.

The previous prime is 862977877. The next prime is 862977901. The reversal of 862977893 is 398779268.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12264004 + 850713889 = 3502^2 + 29167^2 .

It is a cyclic number.

It is not a de Polignac number, because 862977893 - 2⁴ = 862977877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862977823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780 + ... + 41637.

It is an arithmetic number, because the mean of its divisors is an integer number (215760435).

Almost surely, 2^862977893 is an apocalyptic number.

It is an amenable number.

862977893 is a deficient number, since it is larger than the sum of its proper divisors (63847).

862977893 is a wasteful number, since it uses less digits than its factorization.

862977893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63846.

The product of its digits is 9144576, while the sum is 59.

The square root of 862977893 is about 29376.4853752112. The cubic root of 862977893 is about 952.0649057300.

The spelling of 862977893 in words is "eight hundred sixty-two million, nine hundred seventy-seven thousand, eight hundred ninety-three".