3921936 has 20 divisors (see below), whose sum is σ = 10131792. Its totient is φ = 1307296.

The previous prime is 3921919. The next prime is 3921941. The reversal of 3921936 is 6391293.

It is a junction number, because it is equal to n+sod(n) for n = 3921897 and 3921906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40806 + ... + 40901.

Almost surely, 2^3921936 is an apocalyptic number.

It is an amenable number.

3921936 is an abundant number, since it is smaller than the sum of its proper divisors (6209856).

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

3921936 is a wasteful number, since it uses less digits than its factorization.

3921936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81718 (or 81712 counting only the distinct ones).

The product of its digits is 8748, while the sum is 33.

The square root of 3921936 is about 1980.3878408029. The cubic root of 3921936 is about 157.7006563221.

The spelling of 3921936 in words is "three million, nine hundred twenty-one thousand, nine hundred thirty-six".