444402605 has 4 divisors (see below), whose sum is σ = 533283132. Its totient is φ = 355522080.

The previous prime is 444402587. The next prime is 444402653. The reversal of 444402605 is 506204444.

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 333500644 + 110901961 = 18262^2 + 10531^2 .

It is not a de Polignac number, because 444402605 - 2⁸ = 444402349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44440256 + ... + 44440265.

It is an arithmetic number, because the mean of its divisors is an integer number (133320783).

Almost surely, 2^444402605 is an apocalyptic number.

It is an amenable number.

444402605 is a deficient number, since it is larger than the sum of its proper divisors (88880527).

444402605 is an equidigital number, since it uses as much as digits as its factorization.

444402605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88880526.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 444402605 is about 21080.8587348808. The cubic root of 444402605 is about 763.1188805134.

The spelling of 444402605 in words is "four hundred forty-four million, four hundred two thousand, six hundred five".