862864990 has 48 divisors (see below), whose sum is σ = 1698491808. Its totient is φ = 315439488.

The previous prime is 862864973. The next prime is 862864991. The reversal of 862864990 is 99468268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862864991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171592 + ... + 176548.

It is an arithmetic number, because the mean of its divisors is an integer number (35385246).

Almost surely, 2^862864990 is an apocalyptic number.

862864990 is a deficient number, since it is larger than the sum of its proper divisors (835626818).

862864990 is a wasteful number, since it uses less digits than its factorization.

862864990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5093 (or 5080 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 862864990 is about 29374.5636563337. The cubic root of 862864990 is about 952.0233845149.

The spelling of 862864990 in words is "eight hundred sixty-two million, eight hundred sixty-four thousand, nine hundred ninety".