444520413 has 16 divisors (see below), whose sum is σ = 658873600. Its totient is φ = 296200800.

The previous prime is 444520387. The next prime is 444520441. The reversal of 444520413 is 314025444.

It is a happy number.

444520413 is a `hidden beast` number, since 4 + 445 + 204 + 13 = 666.

It is not a de Polignac number, because 444520413 - 2⁸ = 444520157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444522413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103713 + ... + 107913.

It is an arithmetic number, because the mean of its divisors is an integer number (41179600).

Almost surely, 2^444520413 is an apocalyptic number.

It is an amenable number.

444520413 is a deficient number, since it is larger than the sum of its proper divisors (214353187).

444520413 is a wasteful number, since it uses less digits than its factorization.

444520413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129 (or 8123 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 444520413 is about 21083.6527432985. The cubic root of 444520413 is about 763.1863070355.

Adding to 444520413 its reverse (314025444), we get a palindrome (758545857).

The spelling of 444520413 in words is "four hundred forty-four million, five hundred twenty thousand, four hundred thirteen".