444400609 has 4 divisors (see below), whose sum is σ = 445520404. Its totient is φ = 443280816.

The previous prime is 444400603. The next prime is 444400679. The reversal of 444400609 is 906004444.

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 357966400 + 86434209 = 18920^2 + 9297^2 .

It is a cyclic number.

It is not a de Polignac number, because 444400609 - 2⁵ = 444400577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444400603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559302 + ... + 560095.

It is an arithmetic number, because the mean of its divisors is an integer number (111380101).

Almost surely, 2^444400609 is an apocalyptic number.

It is an amenable number.

444400609 is a deficient number, since it is larger than the sum of its proper divisors (1119795).

444400609 is a wasteful number, since it uses less digits than its factorization.

444400609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119794.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 444400609 is about 21080.8113933027. The cubic root of 444400609 is about 763.1177380152.

The spelling of 444400609 in words is "four hundred forty-four million, four hundred thousand, six hundred nine".