401193903944 has 16 divisors (see below), whose sum is σ = 752598696300. Its totient is φ = 200500918272.

The previous prime is 401193903941. The next prime is 401193903949. The reversal of 401193903944 is 449309391104.

It can be written as a sum of positive squares in 2 ways, for example, as 298813103044 + 102380800900 = 546638^2 + 319970^2 .

It is not an unprimeable number, because it can be changed into a prime (401193903941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11986457 + ... + 12019880.

Almost surely, 2^401193903944 is an apocalyptic number.

It is an amenable number.

401193903944 is a deficient number, since it is larger than the sum of its proper divisors (351404792356).

401193903944 is a wasteful number, since it uses less digits than its factorization.

401193903944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24008432 (or 24008428 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 401193903944 in words is "four hundred one billion, one hundred ninety-three million, nine hundred three thousand, nine hundred forty-four".