3909445928 has 16 divisors (see below), whose sum is σ = 7716012000. Its totient is φ = 1851842736.

The previous prime is 3909445927. The next prime is 3909445931. The reversal of 3909445928 is 8295449093.

It is a self number, because there is not a number n which added to its sum of digits gives 3909445928.

It is not an unprimeable number, because it can be changed into a prime (3909445927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12859868 + ... + 12860171.

It is an arithmetic number, because the mean of its divisors is an integer number (482250750).

Almost surely, 2^3909445928 is an apocalyptic number.

3909445928 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3909445928 is a deficient number, since it is larger than the sum of its proper divisors (3806566072).

3909445928 is a wasteful number, since it uses less digits than its factorization.

3909445928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25720064 (or 25720060 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 3909445928 is about 62525.5621965928. The cubic root of 3909445928 is about 1575.3307010965.

The spelling of 3909445928 in words is "three billion, nine hundred nine million, four hundred forty-five thousand, nine hundred twenty-eight".