444434133209 has 16 divisors (see below), whose sum is σ = 513042729984. Its totient is φ = 381021286800.

The previous prime is 444434133181. The next prime is 444434133257. The reversal of 444434133209 is 902331434444.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-444434133209 is a prime.

It is a super-2 number, since 2×444434133209² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444434133259) 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, 12352859 + ... + 12388784.

It is an arithmetic number, because the mean of its divisors is an integer number (32065170624).

Almost surely, 2^444434133209 is an apocalyptic number.

It is an amenable number.

444434133209 is a deficient number, since it is larger than the sum of its proper divisors (68608596775).

444434133209 is a wasteful number, since it uses less digits than its factorization.

444434133209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24741748.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 444434133209 in words is "four hundred forty-four billion, four hundred thirty-four million, one hundred thirty-three thousand, two hundred nine".