56439647 has 16 divisors (see below), whose sum is σ = 63296640. Its totient is φ = 49888800.

The previous prime is 56439629. The next prime is 56439653. The reversal of 56439647 is 74693465.

It is a cyclic number.

It is not a de Polignac number, because 56439647 - 2⁶ = 56439583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56439598 and 56439607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56439947) 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 15 ways as a sum of consecutive naturals, for example, 76004 + ... + 76742.

It is an arithmetic number, because the mean of its divisors is an integer number (3956040).

Almost surely, 2^56439647 is an apocalyptic number.

56439647 is a deficient number, since it is larger than the sum of its proper divisors (6856993).

56439647 is a wasteful number, since it uses less digits than its factorization.

56439647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its digits is 544320, while the sum is 44.

The square root of 56439647 is about 7512.6324946719. The cubic root of 56439647 is about 383.5848355013.

The spelling of 56439647 in words is "fifty-six million, four hundred thirty-nine thousand, six hundred forty-seven".