401463864 has 40 divisors (see below), whose sum is σ = 1124472360. Its totient is φ = 133821072.

The previous prime is 401463847. The next prime is 401463889. The reversal of 401463864 is 468364104.

401463864 is a `hidden beast` number, since 4 + 0 + 14 + 638 + 6 + 4 = 666.

It is a super-2 number, since 2×401463864² = 322346468195620992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 309124 + ... + 310419.

It is an arithmetic number, because the mean of its divisors is an integer number (28111809).

Almost surely, 2^401463864 is an apocalyptic number.

It is an amenable number.

401463864 is an abundant number, since it is smaller than the sum of its proper divisors (723008496).

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

401463864 is a wasteful number, since it uses less digits than its factorization.

401463864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619561 (or 619548 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 401463864 is about 20036.5631783497. The cubic root of 401463864 is about 737.7040256741.

The spelling of 401463864 in words is "four hundred one million, four hundred sixty-three thousand, eight hundred sixty-four".