864279406 has 4 divisors (see below), whose sum is σ = 1296419112. Its totient is φ = 432139702.

The previous prime is 864279397. The next prime is 864279413. The reversal of 864279406 is 604972468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216069850 + ... + 216069853.

It is an arithmetic number, because the mean of its divisors is an integer number (324104778).

Almost surely, 2^864279406 is an apocalyptic number.

864279406 is a deficient number, since it is larger than the sum of its proper divisors (432139706).

864279406 is a wasteful number, since it uses less digits than its factorization.

864279406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432139705.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 864279406 is about 29398.6293217898. The cubic root of 864279406 is about 952.5432889532.

The spelling of 864279406 in words is "eight hundred sixty-four million, two hundred seventy-nine thousand, four hundred six".