442223497 has 2 divisors, whose sum is σ = 442223498. Its totient is φ = 442223496.

The previous prime is 442223473. The next prime is 442223513. The reversal of 442223497 is 794322244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441882441 + 341056 = 21021^2 + 584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442223497 is a prime.

It is not a weakly prime, because it can be changed into another prime (442223797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221111748 + 221111749.

It is an arithmetic number, because the mean of its divisors is an integer number (221111749).

Almost surely, 2^442223497 is an apocalyptic number.

It is an amenable number.

442223497 is a deficient number, since it is larger than the sum of its proper divisors (1).

442223497 is an equidigital number, since it uses as much as digits as its factorization.

442223497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 37.

The square root of 442223497 is about 21029.1107039741. The cubic root of 442223497 is about 761.8695299753.

The spelling of 442223497 in words is "four hundred forty-two million, two hundred twenty-three thousand, four hundred ninety-seven".