39925775428 has 48 divisors (see below), whose sum is σ = 87127012224. Its totient is φ = 15552599040.

The previous prime is 39925775423. The next prime is 39925775443. The reversal of 39925775428 is 82457752993.

It is not an unprimeable number, because it can be changed into a prime (39925775423) 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 15 ways as a sum of consecutive naturals, for example, 2472276 + ... + 2488372.

It is an arithmetic number, because the mean of its divisors is an integer number (1815146088).

Almost surely, 2^39925775428 is an apocalyptic number.

It is an amenable number.

39925775428 is an abundant number, since it is smaller than the sum of its proper divisors (47201236796).

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

39925775428 is a wasteful number, since it uses less digits than its factorization.

39925775428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24172 (or 24170 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 61.

The spelling of 39925775428 in words is "thirty-nine billion, nine hundred twenty-five million, seven hundred seventy-five thousand, four hundred twenty-eight".