4089979 has 4 divisors (see below), whose sum is σ = 4330584. Its totient is φ = 3849376.

The previous prime is 4089973. The next prime is 4090001. The reversal of 4089979 is 9799804.

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

It is a cyclic number.

It is not a de Polignac number, because 4089979 - 2⁵ = 4089947 is a prime.

It is a super-3 number, since 3×4089979³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4089973) 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, 120277 + ... + 120310.

It is an arithmetic number, because the mean of its divisors is an integer number (1082646).

Almost surely, 2^4089979 is an apocalyptic number.

4089979 is a deficient number, since it is larger than the sum of its proper divisors (240605).

4089979 is a wasteful number, since it uses less digits than its factorization.

4089979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240604.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 4089979 is about 2022.3696496932. The cubic root of 4089979 is about 159.9215631166.

The spelling of 4089979 in words is "four million, eighty-nine thousand, nine hundred seventy-nine".