3938989925 has 48 divisors (see below), whose sum is σ = 5408320512. Its totient is φ = 2827353600.

The previous prime is 3938989909. The next prime is 3938989939. The reversal of 3938989925 is 5299898393.

It is not a de Polignac number, because 3938989925 - 2⁴ = 3938989909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 6488972 + ... + 6489578.

It is an arithmetic number, because the mean of its divisors is an integer number (112673344).

Almost surely, 2^3938989925 is an apocalyptic number.

It is an amenable number.

3938989925 is a deficient number, since it is larger than the sum of its proper divisors (1469330587).

3938989925 is a wasteful number, since it uses less digits than its factorization.

3938989925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1153 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 65.

The square root of 3938989925 is about 62761.3728737669. The cubic root of 3938989925 is about 1579.2890468282.

The spelling of 3938989925 in words is "three billion, nine hundred thirty-eight million, nine hundred eighty-nine thousand, nine hundred twenty-five".