39950125440 has 128 divisors (see below), whose sum is σ = 130782906720. Its totient is φ = 10365419520.

The previous prime is 39950125381. The next prime is 39950125469. The reversal of 39950125440 is 4452105993.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 39950125392 and 39950125401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210141 + ... + 352220.

Almost surely, 2^39950125440 is an apocalyptic number.

39950125440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39950125440 is an abundant number, since it is smaller than the sum of its proper divisors (90832781280).

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

39950125440 is a wasteful number, since it uses less digits than its factorization.

39950125440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562420 (or 562408 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 39950125440 in words is "thirty-nine billion, nine hundred fifty million, one hundred twenty-five thousand, four hundred forty".