3901928 has 8 divisors (see below), whose sum is σ = 7316130. Its totient is φ = 1950960.

The previous prime is 3901907. The next prime is 3901943. The reversal of 3901928 is 8291093.

It can be written as a sum of positive squares in only one way, i.e., 3232804 + 669124 = 1798^2 + 818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 3901894 and 3901903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243863 + ... + 243878.

Almost surely, 2^3901928 is an apocalyptic number.

It is an amenable number.

3901928 is a deficient number, since it is larger than the sum of its proper divisors (3414202).

3901928 is a wasteful number, since it uses less digits than its factorization.

3901928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487747 (or 487743 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 3901928 is about 1975.3298458738. The cubic root of 3901928 is about 157.4320257614.

The spelling of 3901928 in words is "three million, nine hundred one thousand, nine hundred twenty-eight".