3979520 has 36 divisors (see below), whose sum is σ = 9535260. Its totient is φ = 1591296.

The previous prime is 3979517. The next prime is 3979523. The reversal of 3979520 is 259793.

It is an interprime number because it is at equal distance from previous prime (3979517) and next prime (3979523).

It can be written as a sum of positive squares in 2 ways, for example, as 1048576 + 2930944 = 1024^2 + 1712^2 .

It is not an unprimeable number, because it can be changed into a prime (3979523) 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, 275 + ... + 2834.

Almost surely, 2^3979520 is an apocalyptic number.

It is an amenable number.

3979520 is an abundant number, since it is smaller than the sum of its proper divisors (5555740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3979520 is an equidigital number, since it uses as much as digits as its factorization.

3979520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 3979520 is about 1994.8734295689. The cubic root of 3979520 is about 158.4687250669.

The spelling of 3979520 in words is "three million, nine hundred seventy-nine thousand, five hundred twenty".