401670988 has 24 divisors (see below), whose sum is σ = 737614080. Its totient is φ = 191022480.

The previous prime is 401670979. The next prime is 401670989. The reversal of 401670988 is 889076104.

It is a super-2 number, since 2×401670988² = 322679165201792288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (401670989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4273 + ... + 28663.

It is an arithmetic number, because the mean of its divisors is an integer number (30733920).

Almost surely, 2^401670988 is an apocalyptic number.

It is an amenable number.

401670988 is a deficient number, since it is larger than the sum of its proper divisors (335943092).

401670988 is a wasteful number, since it uses less digits than its factorization.

401670988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24597 (or 24595 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 401670988 is about 20041.7311627514. The cubic root of 401670988 is about 737.8308697506.

The spelling of 401670988 in words is "four hundred one million, six hundred seventy thousand, nine hundred eighty-eight".