864449406 has 12 divisors (see below), whose sum is σ = 1872973752. Its totient is φ = 288149796.

The previous prime is 864449393. The next prime is 864449419. The reversal of 864449406 is 604944468.

It is an interprime number because it is at equal distance from previous prime (864449393) and next prime (864449419).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24012466 + ... + 24012501.

It is an arithmetic number, because the mean of its divisors is an integer number (156081146).

Almost surely, 2^864449406 is an apocalyptic number.

864449406 is an abundant number, since it is smaller than the sum of its proper divisors (1008524346).

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

864449406 is a wasteful number, since it uses less digits than its factorization.

864449406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48024975 (or 48024972 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 864449406 is about 29401.5204708872. The cubic root of 864449406 is about 952.6057385662.

The spelling of 864449406 in words is "eight hundred sixty-four million, four hundred forty-nine thousand, four hundred six".