442969001 has 2 divisors, whose sum is σ = 442969002. Its totient is φ = 442969000.

The previous prime is 442968943. The next prime is 442969039. The reversal of 442969001 is 100969244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410467600 + 32501401 = 20260^2 + 5701^2 .

It is a cyclic number.

It is not a de Polignac number, because 442969001 - 2²² = 438774697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (442969081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221484500 + 221484501.

It is an arithmetic number, because the mean of its divisors is an integer number (221484501).

Almost surely, 2^442969001 is an apocalyptic number.

It is an amenable number.

442969001 is a deficient number, since it is larger than the sum of its proper divisors (1).

442969001 is an equidigital number, since it uses as much as digits as its factorization.

442969001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 442969001 is about 21046.8287634978. The cubic root of 442969001 is about 762.2974115916.

The spelling of 442969001 in words is "four hundred forty-two million, nine hundred sixty-nine thousand, one".