401403924 has 36 divisors (see below), whose sum is σ = 1052242464. Its totient is φ = 133800984.

The previous prime is 401403917. The next prime is 401403953. The reversal of 401403924 is 429304104.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×401403924² = 322250220405195552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205512 + ... + 207455.

Almost surely, 2^401403924 is an apocalyptic number.

It is an amenable number.

401403924 is an abundant number, since it is smaller than the sum of its proper divisors (650838540).

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

401403924 is a wasteful number, since it uses less digits than its factorization.

401403924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412986 (or 412972 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 401403924 is about 20035.0673570118. The cubic root of 401403924 is about 737.6673098913.

The spelling of 401403924 in words is "four hundred one million, four hundred three thousand, nine hundred twenty-four".