3989715 has 16 divisors (see below), whose sum is σ = 6720000. Its totient is φ = 2015712.

The previous prime is 3989701. The next prime is 3989723. The reversal of 3989715 is 5179893.

It is a happy number.

It is not a de Polignac number, because 3989715 - 2⁵ = 3989683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6715 + ... + 7284.

It is an arithmetic number, because the mean of its divisors is an integer number (420000).

Almost surely, 2^3989715 is an apocalyptic number.

3989715 is a deficient number, since it is larger than the sum of its proper divisors (2730285).

3989715 is a wasteful number, since it uses less digits than its factorization.

3989715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14026.

The product of its digits is 68040, while the sum is 42.

The square root of 3989715 is about 1997.4270950400. The cubic root of 3989715 is about 158.6039349223.

The spelling of 3989715 in words is "three million, nine hundred eighty-nine thousand, seven hundred fifteen".