444897839 has 2 divisors, whose sum is σ = 444897840. Its totient is φ = 444897838.

The previous prime is 444897821. The next prime is 444897881. The reversal of 444897839 is 938798444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444897839 - 2²⁸ = 176462383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444897899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222448919 + 222448920.

It is an arithmetic number, because the mean of its divisors is an integer number (222448920).

Almost surely, 2^444897839 is an apocalyptic number.

444897839 is a deficient number, since it is larger than the sum of its proper divisors (1).

444897839 is an equidigital number, since it uses as much as digits as its factorization.

444897839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 56.

The square root of 444897839 is about 21092.6015228089. The cubic root of 444897839 is about 763.4022437783.

The spelling of 444897839 in words is "four hundred forty-four million, eight hundred ninety-seven thousand, eight hundred thirty-nine".