401161923 has 24 divisors (see below), whose sum is σ = 599398800. Its totient is φ = 265171968.

The previous prime is 401161909. The next prime is 401161927. The reversal of 401161923 is 329161104.

401161923 is a `hidden beast` number, since 40 + 1 + 1 + 619 + 2 + 3 = 666.

It is not a de Polignac number, because 401161923 - 2⁸ = 401161667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (401161927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521283 + ... + 522051.

It is an arithmetic number, because the mean of its divisors is an integer number (24974950).

Almost surely, 2^401161923 is an apocalyptic number.

401161923 is a deficient number, since it is larger than the sum of its proper divisors (198236877).

401161923 is an equidigital number, since it uses as much as digits as its factorization.

401161923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 401161923 is about 20029.0270108161. The cubic root of 401161923 is about 737.5190368733.

The spelling of 401161923 in words is "four hundred one million, one hundred sixty-one thousand, nine hundred twenty-three".