442800907 has 2 divisors, whose sum is σ = 442800908. Its totient is φ = 442800906.

The previous prime is 442800881. The next prime is 442800937. The reversal of 442800907 is 709008244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442800907 - 2²³ = 434412299 is a prime.

It is not a weakly prime, because it can be changed into another prime (442800937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221400453 + 221400454.

It is an arithmetic number, because the mean of its divisors is an integer number (221400454).

Almost surely, 2^442800907 is an apocalyptic number.

442800907 is a deficient number, since it is larger than the sum of its proper divisors (1).

442800907 is an equidigital number, since it uses as much as digits as its factorization.

442800907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 442800907 is about 21042.8350513898. The cubic root of 442800907 is about 762.2009760755.

The spelling of 442800907 in words is "four hundred forty-two million, eight hundred thousand, nine hundred seven".