442969039 has 2 divisors, whose sum is σ = 442969040. Its totient is φ = 442969038.

The previous prime is 442969001. The next prime is 442969073. The reversal of 442969039 is 930969244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442969039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442969039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442969099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221484519 + 221484520.

It is an arithmetic number, because the mean of its divisors is an integer number (221484520).

Almost surely, 2^442969039 is an apocalyptic number.

442969039 is a deficient number, since it is larger than the sum of its proper divisors (1).

442969039 is an equidigital number, since it uses as much as digits as its factorization.

442969039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 442969039 is about 21046.8296662466. The cubic root of 442969039 is about 762.2974333895.

It can be divided in two parts, 44296 and 9039, that added together give a palindrome (53335).

The spelling of 442969039 in words is "four hundred forty-two million, nine hundred sixty-nine thousand, thirty-nine".