431979 has 8 divisors (see below), whose sum is σ = 579072. Its totient is φ = 286440.

The previous prime is 431947. The next prime is 431983. The reversal of 431979 is 979134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431979 - 2⁵ = 431947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702 + ... + 1164.

It is an arithmetic number, because the mean of its divisors is an integer number (72384).

2⁴³¹⁹⁷⁹ is an apocalyptic number.

431979 is a deficient number, since it is larger than the sum of its proper divisors (147093).

431979 is a wasteful number, since it uses less digits than its factorization.

431979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 6804, while the sum is 33.

The square root of 431979 is about 657.2510935708. The cubic root of 431979 is about 75.5940380506.

The spelling of 431979 in words is "four hundred thirty-one thousand, nine hundred seventy-nine".