56909434 has 4 divisors (see below), whose sum is σ = 85364154. Its totient is φ = 28454716.

The previous prime is 56909431. The next prime is 56909449. The reversal of 56909434 is 43490965.

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

It can be written as a sum of positive squares in only one way, i.e., 52056225 + 4853209 = 7215^2 + 2203^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56909431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14227357 + ... + 14227360.

Almost surely, 2^56909434 is an apocalyptic number.

56909434 is a deficient number, since it is larger than the sum of its proper divisors (28454720).

56909434 is a wasteful number, since it uses less digits than its factorization.

56909434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28454719.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 56909434 is about 7543.8341710300. The cubic root of 56909434 is about 384.6461785580.

The spelling of 56909434 in words is "fifty-six million, nine hundred nine thousand, four hundred thirty-four".