401684894 has 16 divisors (see below), whose sum is σ = 652633632. Its totient is φ = 184319328.

The previous prime is 401684873. The next prime is 401684911. The reversal of 401684894 is 498486104.

It is a super-2 number, since 2×401684894² = 322701508135582472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40154 + ... + 49149.

It is an arithmetic number, because the mean of its divisors is an integer number (40789602).

Almost surely, 2^401684894 is an apocalyptic number.

401684894 is a deficient number, since it is larger than the sum of its proper divisors (250948738).

401684894 is a wasteful number, since it uses less digits than its factorization.

401684894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89491.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 401684894 is about 20042.0780858672. The cubic root of 401684894 is about 737.8393843126.

The spelling of 401684894 in words is "four hundred one million, six hundred eighty-four thousand, eight hundred ninety-four".