444499478909 has 2 divisors, whose sum is σ = 444499478910. Its totient is φ = 444499478908.

The previous prime is 444499478893. The next prime is 444499478933. The reversal of 444499478909 is 909874994444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430086756100 + 14412722809 = 655810^2 + 120053^2 .

It is a cyclic number.

It is not a de Polignac number, because 444499478909 - 2⁴ = 444499478893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444499472909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222249739454 + 222249739455.

It is an arithmetic number, because the mean of its divisors is an integer number (222249739455).

Almost surely, 2^444499478909 is an apocalyptic number.

It is an amenable number.

444499478909 is a deficient number, since it is larger than the sum of its proper divisors (1).

444499478909 is an equidigital number, since it uses as much as digits as its factorization.

444499478909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376233984, while the sum is 71.

The spelling of 444499478909 in words is "four hundred forty-four billion, four hundred ninety-nine million, four hundred seventy-eight thousand, nine hundred nine".