438979 has 2 divisors, whose sum is σ = 438980. Its totient is φ = 438978.

The previous prime is 438967. The next prime is 438983. The reversal of 438979 is 979834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438979 - 2⁹ = 438467 is a prime.

It is not a weakly prime, because it can be changed into another prime (438989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219489 + 219490.

It is an arithmetic number, because the mean of its divisors is an integer number (219490).

2⁴³⁸⁹⁷⁹ is an apocalyptic number.

438979 is a deficient number, since it is larger than the sum of its proper divisors (1).

438979 is an equidigital number, since it uses as much as digits as its factorization.

438979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 438979 is about 662.5549033854. The cubic root of 438979 is about 76.0001731298. Note that the first 3 decimals are identical.

It can be divided in two parts, 4 and 38979, that added together give a palindrome (38983).

The spelling of 438979 in words is "four hundred thirty-eight thousand, nine hundred seventy-nine".