3996915 has 32 divisors (see below), whose sum is σ = 6988800. Its totient is φ = 1938816.

The previous prime is 3996911. The next prime is 3996919. The reversal of 3996915 is 5196993.

It is an interprime number because it is at equal distance from previous prime (3996911) and next prime (3996919).

It is not a de Polignac number, because 3996915 - 2² = 3996911 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3996911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19986 + ... + 20184.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

Almost surely, 2^3996915 is an apocalyptic number.

3996915 is a deficient number, since it is larger than the sum of its proper divisors (2991885).

3996915 is a wasteful number, since it uses less digits than its factorization.

3996915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its digits is 65610, while the sum is 42.

The square root of 3996915 is about 1999.2286012360. The cubic root of 3996915 is about 158.6992852655.

The spelling of 3996915 in words is "three million, nine hundred ninety-six thousand, nine hundred fifteen".