401671886 has 32 divisors (see below), whose sum is σ = 795370752. Its totient is φ = 147288960.

The previous prime is 401671877. The next prime is 401671891. The reversal of 401671886 is 688176104.

It is a super-2 number, since 2×401671886² = 322680608005593992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74096 + ... + 79331.

It is an arithmetic number, because the mean of its divisors is an integer number (24855336).

Almost surely, 2^401671886 is an apocalyptic number.

401671886 is a deficient number, since it is larger than the sum of its proper divisors (393698866).

401671886 is a wasteful number, since it uses less digits than its factorization.

401671886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153464.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 401671886 is about 20041.7535659932. The cubic root of 401671886 is about 737.8314195966.

The spelling of 401671886 in words is "four hundred one million, six hundred seventy-one thousand, eight hundred eighty-six".