401494531 has 4 divisors (see below), whose sum is σ = 415339200. Its totient is φ = 387649864.

The previous prime is 401494519. The next prime is 401494549. The reversal of 401494531 is 135494104.

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 401494531 - 2⁷ = 401494403 is a prime.

It is a super-2 number, since 2×401494531² = 322395716845819922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401494493 and 401494502.

It is not an unprimeable number, because it can be changed into a prime (401494501) 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, 6922291 + ... + 6922348.

It is an arithmetic number, because the mean of its divisors is an integer number (103834800).

Almost surely, 2^401494531 is an apocalyptic number.

401494531 is a deficient number, since it is larger than the sum of its proper divisors (13844669).

401494531 is a wasteful number, since it uses less digits than its factorization.

401494531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844668.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 401494531 is about 20037.3284396898. The cubic root of 401494531 is about 737.7228090943.

The spelling of 401494531 in words is "four hundred one million, four hundred ninety-four thousand, five hundred thirty-one".