444713537 has 4 divisors (see below), whose sum is σ = 444802260. Its totient is φ = 444624816.

The previous prime is 444713531. The next prime is 444713551. The reversal of 444713537 is 735317444.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371371441 + 73342096 = 19271^2 + 8564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444713537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444713537.

It is not an unprimeable number, because it can be changed into a prime (444713531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36362 + ... + 47027.

It is an arithmetic number, because the mean of its divisors is an integer number (111200565).

Almost surely, 2^444713537 is an apocalyptic number.

It is an amenable number.

444713537 is a deficient number, since it is larger than the sum of its proper divisors (88723).

444713537 is an equidigital number, since it uses as much as digits as its factorization.

444713537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88722.

The product of its digits is 141120, while the sum is 38.

The square root of 444713537 is about 21088.2321923863. The cubic root of 444713537 is about 763.2968143362.

The spelling of 444713537 in words is "four hundred forty-four million, seven hundred thirteen thousand, five hundred thirty-seven".