401951403 has 48 divisors (see below), whose sum is σ = 724389120. Its totient is φ = 217580256.

The previous prime is 401951371. The next prime is 401951467. The reversal of 401951403 is 304159104.

It is not a de Polignac number, because 401951403 - 2⁵ = 401951371 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 (401951203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26101 + ... + 38537.

It is an arithmetic number, because the mean of its divisors is an integer number (15091440).

Almost surely, 2^401951403 is an apocalyptic number.

401951403 is a deficient number, since it is larger than the sum of its proper divisors (322437717).

401951403 is a wasteful number, since it uses less digits than its factorization.

401951403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12478 (or 12466 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 401951403 is about 20048.7257201050. The cubic root of 401951403 is about 738.0025282483.

The spelling of 401951403 in words is "four hundred one million, nine hundred fifty-one thousand, four hundred three".