442993679 has 2 divisors, whose sum is σ = 442993680. Its totient is φ = 442993678.

The previous prime is 442993669. The next prime is 442993723. The reversal of 442993679 is 976399244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442993679 - 2⁸ = 442993423 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442993679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442993619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221496839 + 221496840.

It is an arithmetic number, because the mean of its divisors is an integer number (221496840).

Almost surely, 2^442993679 is an apocalyptic number.

442993679 is a deficient number, since it is larger than the sum of its proper divisors (1).

442993679 is an equidigital number, since it uses as much as digits as its factorization.

442993679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 53.

The square root of 442993679 is about 21047.4150194270. The cubic root of 442993679 is about 762.3115673047.

The spelling of 442993679 in words is "four hundred forty-two million, nine hundred ninety-three thousand, six hundred seventy-nine".