44397539 has 2 divisors, whose sum is σ = 44397540. Its totient is φ = 44397538.

The previous prime is 44397511. The next prime is 44397541. The reversal of 44397539 is 93579344.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44397539 - 2²⁴ = 27620323 is a prime.

It is a super-2 number, since 2×44397539² = 3942282938513042, which contains 22 as substring.

Together with 44397541, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44397539.

It is not a weakly prime, because it can be changed into another prime (44397589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22198769 + 22198770.

It is an arithmetic number, because the mean of its divisors is an integer number (22198770).

Almost surely, 2^44397539 is an apocalyptic number.

44397539 is a deficient number, since it is larger than the sum of its proper divisors (1).

44397539 is an equidigital number, since it uses as much as digits as its factorization.

44397539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 44.

The square root of 44397539 is about 6663.1478296673. The cubic root of 44397539 is about 354.0948680169.

The spelling of 44397539 in words is "forty-four million, three hundred ninety-seven thousand, five hundred thirty-nine".