400979953 has 8 divisors (see below), whose sum is σ = 456451776. Its totient is φ = 348678000.

The previous prime is 400979939. The next prime is 400980017. The reversal of 400979953 is 359979004.

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

It is not a de Polignac number, because 400979953 - 2⁵ = 400979921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400979903) 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, 792198 + ... + 792703.

It is an arithmetic number, because the mean of its divisors is an integer number (57056472).

Almost surely, 2^400979953 is an apocalyptic number.

It is an amenable number.

400979953 is a deficient number, since it is larger than the sum of its proper divisors (55471823).

400979953 is a wasteful number, since it uses less digits than its factorization.

400979953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584935.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 400979953 is about 20024.4838385413. The cubic root of 400979953 is about 737.4075053205.

The spelling of 400979953 in words is "four hundred million, nine hundred seventy-nine thousand, nine hundred fifty-three".