401044016 has 20 divisors (see below), whose sum is σ = 803817600. Its totient is φ = 193607232.

The previous prime is 401044009. The next prime is 401044067. The reversal of 401044016 is 610440104.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431696 + ... + 432623.

It is an arithmetic number, because the mean of its divisors is an integer number (40190880).

Almost surely, 2^401044016 is an apocalyptic number.

It is an amenable number.

401044016 is an abundant number, since it is smaller than the sum of its proper divisors (402773584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401044016 is a wasteful number, since it uses less digits than its factorization.

401044016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864356 (or 864350 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 401044016 is about 20026.0833914173. The cubic root of 401044016 is about 737.4467741344.

The spelling of 401044016 in words is "four hundred one million, forty-four thousand, sixteen".