445210669 has 2 divisors, whose sum is σ = 445210670. Its totient is φ = 445210668.

The previous prime is 445210631. The next prime is 445210699. The reversal of 445210669 is 966012544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232196644 + 213014025 = 15238^2 + 14595^2 .

It is a cyclic number.

It is not a de Polignac number, because 445210669 - 2²⁵ = 411656237 is a prime.

It is a super-2 number, since 2×445210669² = 396425079582855122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445210699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222605334 + 222605335.

It is an arithmetic number, because the mean of its divisors is an integer number (222605335).

Almost surely, 2^445210669 is an apocalyptic number.

It is an amenable number.

445210669 is a deficient number, since it is larger than the sum of its proper divisors (1).

445210669 is an equidigital number, since it uses as much as digits as its factorization.

445210669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 445210669 is about 21100.0158530746. The cubic root of 445210669 is about 763.5811306677.

The spelling of 445210669 in words is "four hundred forty-five million, two hundred ten thousand, six hundred sixty-nine".