444816109 has 8 divisors (see below), whose sum is σ = 461277440. Its totient is φ = 428588496.

The previous prime is 444816091. The next prime is 444816157. The reversal of 444816109 is 901618444.

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 444816109 - 2⁵ = 444816077 is a prime.

It is a super-2 number, since 2×444816109² = 395722741651799762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444816199) 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, 54549 + ... + 62170.

It is an arithmetic number, because the mean of its divisors is an integer number (57659680).

Almost surely, 2^444816109 is an apocalyptic number.

It is an amenable number.

444816109 is a deficient number, since it is larger than the sum of its proper divisors (16461331).

444816109 is a wasteful number, since it uses less digits than its factorization.

444816109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116859.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 444816109 is about 21090.6640246342. The cubic root of 444816109 is about 763.3554939548.

The spelling of 444816109 in words is "four hundred forty-four million, eight hundred sixteen thousand, one hundred nine".