442979 has 2 divisors, whose sum is σ = 442980. Its totient is φ = 442978.

The previous prime is 442973. The next prime is 442987. The reversal of 442979 is 979244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442979 - 2⁴ = 442963 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 4⁶ + 4⁹ + 9 + 2⁵ + 7⁶ + 9⁵ .

It is not a weakly prime, because it can be changed into another prime (442973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221489 + 221490.

It is an arithmetic number, because the mean of its divisors is an integer number (221490).

2⁴⁴²⁹⁷⁹ is an apocalyptic number.

442979 is a deficient number, since it is larger than the sum of its proper divisors (1).

442979 is an equidigital number, since it uses as much as digits as its factorization.

442979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 442979 is about 665.5666758485. The cubic root of 442979 is about 76.2303147248.

The spelling of 442979 in words is "four hundred forty-two thousand, nine hundred seventy-nine".