442807107064489 has 2 divisors, whose sum is σ = 442807107064490. Its totient is φ = 442807107064488.

The previous prime is 442807107064463. The next prime is 442807107064523. The reversal of 442807107064489 is 984460701708244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404152039082089 + 38655067982400 = 20103533^2 + 6217320^2 .

It is a cyclic number.

It is not a de Polignac number, because 442807107064489 - 2²⁹ = 442806570193577 is a prime.

It is a super-2 number, since 2×442807107064489² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442807107064489.

It is not a weakly prime, because it can be changed into another prime (442807107074489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221403553532244 + 221403553532245.

It is an arithmetic number, because the mean of its divisors is an integer number (221403553532245).

Almost surely, 2^{442807107064489} is an apocalyptic number.

It is an amenable number.

442807107064489 is a deficient number, since it is larger than the sum of its proper divisors (1).

442807107064489 is an equidigital number, since it uses as much as digits as its factorization.

442807107064489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86704128, while the sum is 64.

The spelling of 442807107064489 in words is "four hundred forty-two trillion, eight hundred seven billion, one hundred seven million, sixty-four thousand, four hundred eighty-nine".