3979515 has 16 divisors (see below), whose sum is σ = 6393600. Its totient is φ = 2113632.

The previous prime is 3979511. The next prime is 3979517. The reversal of 3979515 is 5159793.

It is not a de Polignac number, because 3979515 - 2² = 3979511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3979511) 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, 5016 + ... + 5754.

It is an arithmetic number, because the mean of its divisors is an integer number (399600).

Almost surely, 2^3979515 is an apocalyptic number.

3979515 is a deficient number, since it is larger than the sum of its proper divisors (2414085).

3979515 is a wasteful number, since it uses less digits than its factorization.

3979515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106.

The product of its digits is 42525, while the sum is 39.

The square root of 3979515 is about 1994.8721763562. The cubic root of 3979515 is about 158.4686586984.

The spelling of 3979515 in words is "three million, nine hundred seventy-nine thousand, five hundred fifteen".