401374443438 has 12 divisors (see below), whose sum is σ = 869644627488. Its totient is φ = 133791481140.

The previous prime is 401374443401. The next prime is 401374443473. The reversal of 401374443438 is 834344473104.

401374443438 is a `hidden beast` number, since 4 + 0 + 137 + 44 + 43 + 438 = 666.

It is a super-2 number, since 2×401374443438² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401374443393 and 401374443402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11149290078 + ... + 11149290113.

It is an arithmetic number, because the mean of its divisors is an integer number (72470385624).

Almost surely, 2^401374443438 is an apocalyptic number.

401374443438 is an abundant number, since it is smaller than the sum of its proper divisors (468270184050).

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

401374443438 is a wasteful number, since it uses less digits than its factorization.

401374443438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22298580199 (or 22298580196 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 45.

The spelling of 401374443438 in words is "four hundred one billion, three hundred seventy-four million, four hundred forty-three thousand, four hundred thirty-eight".