445040539 has 2 divisors, whose sum is σ = 445040540. Its totient is φ = 445040538.

The previous prime is 445040513. The next prime is 445040543. The reversal of 445040539 is 935040544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445040539 - 2¹⁷ = 444909467 is a prime.

It is a super-2 number, since 2×445040539² = 396122162706821042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445040839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222520269 + 222520270.

It is an arithmetic number, because the mean of its divisors is an integer number (222520270).

Almost surely, 2^445040539 is an apocalyptic number.

445040539 is a deficient number, since it is larger than the sum of its proper divisors (1).

445040539 is an equidigital number, since it uses as much as digits as its factorization.

445040539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 445040539 is about 21095.9839542980. The cubic root of 445040539 is about 763.4838549151.

The spelling of 445040539 in words is "four hundred forty-five million, forty thousand, five hundred thirty-nine".