3899913 has 16 divisors (see below), whose sum is σ = 5362752. Its totient is φ = 2520000.

The previous prime is 3899887. The next prime is 3899927. The reversal of 3899913 is 3199983.

It is a happy number.

It is not a de Polignac number, because 3899913 - 2⁵ = 3899881 is a prime.

3899913 is an undulating number in base 14.

It is not an unprimeable number, because it can be changed into a prime (3899963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18378 + ... + 18588.

It is an arithmetic number, because the mean of its divisors is an integer number (335172).

Almost surely, 2^3899913 is an apocalyptic number.

It is an amenable number.

3899913 is a deficient number, since it is larger than the sum of its proper divisors (1462839).

3899913 is a wasteful number, since it uses less digits than its factorization.

3899913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its digits is 52488, while the sum is 42.

The square root of 3899913 is about 1974.8197386091. The cubic root of 3899913 is about 157.4049211989.

The spelling of 3899913 in words is "three million, eight hundred ninety-nine thousand, nine hundred thirteen".