3905979 has 32 divisors (see below), whose sum is σ = 6683136. Its totient is φ = 1969920.

The previous prime is 3905953. The next prime is 3905987. The reversal of 3905979 is 9795093.

It is a happy number.

3905979 is nontrivially palindromic in base 4.

3905979 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 3905979 - 2⁹ = 3905467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3905979.

It is not an unprimeable number, because it can be changed into a prime (3905999) 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, 8319 + ... + 8775.

It is an arithmetic number, because the mean of its divisors is an integer number (208848).

Almost surely, 2^3905979 is an apocalyptic number.

3905979 is a deficient number, since it is larger than the sum of its proper divisors (2777157).

3905979 is a wasteful number, since it uses less digits than its factorization.

3905979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 76545, while the sum is 42.

The square root of 3905979 is about 1976.3549782365. The cubic root of 3905979 is about 157.4864891409.

It can be divided in two parts, 3905 and 979, that added together give a palindrome (4884).

The spelling of 3905979 in words is "three million, nine hundred five thousand, nine hundred seventy-nine".