442023607 has 2 divisors, whose sum is σ = 442023608. Its totient is φ = 442023606.

The previous prime is 442023587. The next prime is 442023623. The reversal of 442023607 is 706320244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442023607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442023007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221011803 + 221011804.

It is an arithmetic number, because the mean of its divisors is an integer number (221011804).

Almost surely, 2^442023607 is an apocalyptic number.

442023607 is a deficient number, since it is larger than the sum of its proper divisors (1).

442023607 is an equidigital number, since it uses as much as digits as its factorization.

442023607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 442023607 is about 21024.3574693735. The cubic root of 442023607 is about 761.7547214733.

The spelling of 442023607 in words is "four hundred forty-two million, twenty-three thousand, six hundred seven".