869278464 has 54 divisors (see below), whose sum is σ = 2506350756. Its totient is φ = 289758720.

The previous prime is 869278439. The next prime is 869278469. The reversal of 869278464 is 464872968.

It is a self number, because there is not a number n which added to its sum of digits gives 869278464.

It is not an unprimeable number, because it can be changed into a prime (869278469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186342 + ... + 190949.

Almost surely, 2^869278464 is an apocalyptic number.

It is an amenable number.

869278464 is an abundant number, since it is smaller than the sum of its proper divisors (1637072292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869278464 is a wasteful number, since it uses less digits than its factorization.

869278464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377313 (or 377296 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 869278464 is about 29483.5286897617. The cubic root of 869278464 is about 954.3762870925.

The spelling of 869278464 in words is "eight hundred sixty-nine million, two hundred seventy-eight thousand, four hundred sixty-four".