56439868 has 6 divisors (see below), whose sum is σ = 98769776. Its totient is φ = 28219932.

The previous prime is 56439863. The next prime is 56439883. The reversal of 56439868 is 86893465.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56439863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7054980 + ... + 7054987.

Almost surely, 2^56439868 is an apocalyptic number.

It is an amenable number.

56439868 is a deficient number, since it is larger than the sum of its proper divisors (42329908).

56439868 is a wasteful number, since it uses less digits than its factorization.

56439868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14109971 (or 14109969 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 56439868 is about 7512.6472032167. The cubic root of 56439868 is about 383.5853361667.

The spelling of 56439868 in words is "fifty-six million, four hundred thirty-nine thousand, eight hundred sixty-eight".