444452813 has 8 divisors (see below), whose sum is σ = 508968000. Its totient is φ = 380193120.

The previous prime is 444452791. The next prime is 444452837. The reversal of 444452813 is 318254444.

It is a happy number.

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 444452813 - 2⁸ = 444452557 is a prime.

It is a super-2 number, since 2×444452813² = 395076605967225938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444452873) 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, 60128 + ... + 67113.

It is an arithmetic number, because the mean of its divisors is an integer number (63621000).

Almost surely, 2^444452813 is an apocalyptic number.

It is an amenable number.

444452813 is a deficient number, since it is larger than the sum of its proper divisors (64515187).

444452813 is a wasteful number, since it uses less digits than its factorization.

444452813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127747.

The product of its digits is 61440, while the sum is 35.

The square root of 444452813 is about 21082.0495445770. The cubic root of 444452813 is about 763.1476181412.

The spelling of 444452813 in words is "four hundred forty-four million, four hundred fifty-two thousand, eight hundred thirteen".