56439649 has 8 divisors (see below), whose sum is σ = 64593728. Its totient is φ = 48308400.

The previous prime is 56439629. The next prime is 56439653. The reversal of 56439649 is 94693465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56439649 - 2¹⁹ = 55915361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56439599 and 56439608.

It is not an unprimeable number, because it can be changed into a prime (56439629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27 + ... + 10624.

It is an arithmetic number, because the mean of its divisors is an integer number (8074216).

Almost surely, 2^56439649 is an apocalyptic number.

It is an amenable number.

56439649 is a deficient number, since it is larger than the sum of its proper divisors (8154079).

56439649 is a wasteful number, since it uses less digits than its factorization.

56439649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11415.

The product of its digits is 699840, while the sum is 46.

The square root of 56439649 is about 7512.6326277810. The cubic root of 56439649 is about 383.5848400322.

The spelling of 56439649 in words is "fifty-six million, four hundred thirty-nine thousand, six hundred forty-nine".