3928940 has 24 divisors (see below), whose sum is σ = 8518272. Its totient is φ = 1520640.

The previous prime is 3928937. The next prime is 3928961. The reversal of 3928940 is 498293.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 3928940.

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, 2549 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (354928).

Almost surely, 2^3928940 is an apocalyptic number.

It is an amenable number.

3928940 is an abundant number, since it is smaller than the sum of its proper divisors (4589332).

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

3928940 is a wasteful number, since it uses less digits than its factorization.

3928940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6375 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 3928940 is about 1982.1553924958. The cubic root of 3928940 is about 157.7944772085.

The spelling of 3928940 in words is "three million, nine hundred twenty-eight thousand, nine hundred forty".