444654139 has 2 divisors, whose sum is σ = 444654140. Its totient is φ = 444654138.

The previous prime is 444654137. The next prime is 444654151. The reversal of 444654139 is 931456444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444654139 - 2¹ = 444654137 is a prime.

Together with 444654137, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_23584675 and since 444654139 and 23584675 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (444654137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222327069 + 222327070.

It is an arithmetic number, because the mean of its divisors is an integer number (222327070).

Almost surely, 2^444654139 is an apocalyptic number.

444654139 is a deficient number, since it is larger than the sum of its proper divisors (1).

444654139 is an equidigital number, since it uses as much as digits as its factorization.

444654139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 444654139 is about 21086.8238243696. The cubic root of 444654139 is about 763.2628296703.

It can be divided in two parts, 4446 and 54139, that added together give a palindrome (58585).

The spelling of 444654139 in words is "four hundred forty-four million, six hundred fifty-four thousand, one hundred thirty-nine".