400056351 has 4 divisors (see below), whose sum is σ = 533408472. Its totient is φ = 266704232.

The previous prime is 400056347. The next prime is 400056353. The reversal of 400056351 is 153650004.

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

It is a cyclic number.

It is not a de Polignac number, because 400056351 - 2² = 400056347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400056353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66676056 + ... + 66676061.

It is an arithmetic number, because the mean of its divisors is an integer number (133352118).

Almost surely, 2^400056351 is an apocalyptic number.

400056351 is a deficient number, since it is larger than the sum of its proper divisors (133352121).

400056351 is a wasteful number, since it uses less digits than its factorization.

400056351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133352120.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 400056351 is about 20001.4087253873. The cubic root of 400056351 is about 736.8408979133.

The spelling of 400056351 in words is "four hundred million, fifty-six thousand, three hundred fifty-one".