3909680 has 20 divisors (see below), whose sum is σ = 9090192. Its totient is φ = 1563840.

The previous prime is 3909671. The next prime is 3909691. The reversal of 3909680 is 869093.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3909680.

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, 24356 + ... + 24515.

Almost surely, 2^3909680 is an apocalyptic number.

It is an amenable number.

3909680 is an abundant number, since it is smaller than the sum of its proper divisors (5180512).

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

3909680 is a wasteful number, since it uses less digits than its factorization.

3909680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48884 (or 48878 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3909680 is about 1977.2910761949. The cubic root of 3909680 is about 157.5362140628.

The spelling of 3909680 in words is "three million, nine hundred nine thousand, six hundred eighty".