3919729872 has 40 divisors (see below), whose sum is σ = 10171404544. Its totient is φ = 1300713984.

The previous prime is 3919729861. The next prime is 3919729927. The reversal of 3919729872 is 2789279193.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172393 + ... + 193800.

Almost surely, 2^3919729872 is an apocalyptic number.

It is an amenable number.

3919729872 is an abundant number, since it is smaller than the sum of its proper divisors (6251674672).

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

3919729872 is a wasteful number, since it uses less digits than its factorization.

3919729872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366427 (or 366421 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 57.

The square root of 3919729872 is about 62607.7461022197. The cubic root of 3919729872 is about 1576.7108138025.

The spelling of 3919729872 in words is "three billion, nine hundred nineteen million, seven hundred twenty-nine thousand, eight hundred seventy-two".