401979459894 has 64 divisors (see below), whose sum is σ = 881029275840. Its totient is φ = 121703751680.

The previous prime is 401979459853. The next prime is 401979459913. The reversal of 401979459894 is 498954979104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6301342 + ... + 6364814.

It is an arithmetic number, because the mean of its divisors is an integer number (13766082435).

Almost surely, 2^401979459894 is an apocalyptic number.

401979459894 is an abundant number, since it is smaller than the sum of its proper divisors (479049815946).

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

401979459894 is a wasteful number, since it uses less digits than its factorization.

401979459894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65665.

The product of its (nonzero) digits is 117573120, while the sum is 69.

The spelling of 401979459894 in words is "four hundred one billion, nine hundred seventy-nine million, four hundred fifty-nine thousand, eight hundred ninety-four".