401331139 has 32 divisors (see below), whose sum is σ = 461399040. Its totient is φ = 345945600.

The previous prime is 401331137. The next prime is 401331143. The reversal of 401331139 is 931133104.

It is not a de Polignac number, because 401331139 - 2¹ = 401331137 is a prime.

It is a super-2 number, since 2×401331139² = 322133366262074642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401331137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3551547 + ... + 3551659.

It is an arithmetic number, because the mean of its divisors is an integer number (14418720).

Almost surely, 2^401331139 is an apocalyptic number.

401331139 is a deficient number, since it is larger than the sum of its proper divisors (60067901).

401331139 is a wasteful number, since it uses less digits than its factorization.

401331139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 401331139 is about 20033.2508345500. The cubic root of 401331139 is about 737.6227210890.

The spelling of 401331139 in words is "four hundred one million, three hundred thirty-one thousand, one hundred thirty-nine".