3921919472 has 20 divisors (see below), whose sum is σ = 7653390360. Its totient is φ = 1946851008.

The previous prime is 3921919457. The next prime is 3921919481. The reversal of 3921919472 is 2749191293.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879503 + ... + 883950.

It is an arithmetic number, because the mean of its divisors is an integer number (382669518).

Almost surely, 2^3921919472 is an apocalyptic number.

It is an amenable number.

3921919472 is a deficient number, since it is larger than the sum of its proper divisors (3731470888).

3921919472 is a wasteful number, since it uses less digits than its factorization.

3921919472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763600 (or 1763594 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 3921919472 is about 62625.2303149457. The cubic root of 3921919472 is about 1577.0043479207.

The spelling of 3921919472 in words is "three billion, nine hundred twenty-one million, nine hundred nineteen thousand, four hundred seventy-two".