3979513 has 4 divisors (see below), whose sum is σ = 4213620. Its totient is φ = 3745408.

The previous prime is 3979511. The next prime is 3979517. The reversal of 3979513 is 3159793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 710649 = 1808^2 + 843^2 .

It is a cyclic number.

It is not a de Polignac number, because 3979513 - 2¹ = 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 3 ways as a sum of consecutive naturals, for example, 117028 + ... + 117061.

It is an arithmetic number, because the mean of its divisors is an integer number (1053405).

Almost surely, 2^3979513 is an apocalyptic number.

It is an amenable number.

3979513 is a deficient number, since it is larger than the sum of its proper divisors (234107).

3979513 is a wasteful number, since it uses less digits than its factorization.

3979513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234106.

The product of its digits is 25515, while the sum is 37.

The square root of 3979513 is about 1994.8716750709. The cubic root of 3979513 is about 158.4686321510.

The spelling of 3979513 in words is "three million, nine hundred seventy-nine thousand, five hundred thirteen".