56400407 has 8 divisors (see below), whose sum is σ = 68249376. Its totient is φ = 45499392.

The previous prime is 56400397. The next prime is 56400419. The reversal of 56400407 is 70400465.

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

It is a cyclic number.

It is not a de Polignac number, because 56400407 - 2¹⁴ = 56384023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56400437) 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, 236858 + ... + 237095.

It is an arithmetic number, because the mean of its divisors is an integer number (8531172).

Almost surely, 2^56400407 is an apocalyptic number.

56400407 is a deficient number, since it is larger than the sum of its proper divisors (11848969).

56400407 is a wasteful number, since it uses less digits than its factorization.

56400407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473977.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 56400407 is about 7510.0204393863. The cubic root of 56400407 is about 383.4959183459.

The spelling of 56400407 in words is "fifty-six million, four hundred thousand, four hundred seven".