439853979 has 4 divisors (see below), whose sum is σ = 586471976. Its totient is φ = 293235984.

The previous prime is 439853951. The next prime is 439853987. The reversal of 439853979 is 979358934.

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

It is not a de Polignac number, because 439853979 - 2⁸ = 439853723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439853929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73308994 + ... + 73308999.

It is an arithmetic number, because the mean of its divisors is an integer number (146617994).

Almost surely, 2^439853979 is an apocalyptic number.

439853979 is a deficient number, since it is larger than the sum of its proper divisors (146617997).

439853979 is a wasteful number, since it uses less digits than its factorization.

439853979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146617996.

The product of its digits is 7348320, while the sum is 57.

The square root of 439853979 is about 20972.6960355601. The cubic root of 439853979 is about 760.5063448247.

The spelling of 439853979 in words is "four hundred thirty-nine million, eight hundred fifty-three thousand, nine hundred seventy-nine".