444909613 has 8 divisors (see below), whose sum is σ = 467928576. Its totient is φ = 422432400.

The previous prime is 444909587. The next prime is 444909617. The reversal of 444909613 is 316909444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444909613 - 2¹³ = 444901421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444909617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133753 + ... + 137038.

It is an arithmetic number, because the mean of its divisors is an integer number (58491072).

Almost surely, 2^444909613 is an apocalyptic number.

It is an amenable number.

444909613 is a deficient number, since it is larger than the sum of its proper divisors (23018963).

444909613 is a wasteful number, since it uses less digits than its factorization.

444909613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270875.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 444909613 is about 21092.8806235659. The cubic root of 444909613 is about 763.4089780725.

The spelling of 444909613 in words is "four hundred forty-four million, nine hundred nine thousand, six hundred thirteen".