3899715 has 32 divisors (see below), whose sum is σ = 6785856. Its totient is φ = 1904640.

The previous prime is 3899699. The next prime is 3899737. The reversal of 3899715 is 5179983.

It is a happy number.

It is not a de Polignac number, because 3899715 - 2⁴ = 3899699 is a prime.

3899715 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10269 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (212058).

Almost surely, 2^3899715 is an apocalyptic number.

3899715 is a deficient number, since it is larger than the sum of its proper divisors (2886141).

3899715 is a wasteful number, since it uses less digits than its factorization.

3899715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

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

The square root of 3899715 is about 1974.7696068149. The cubic root of 3899715 is about 157.4022573188.

The spelling of 3899715 in words is "three million, eight hundred ninety-nine thousand, seven hundred fifteen".