444457939 has 2 divisors, whose sum is σ = 444457940. Its totient is φ = 444457938.

The previous prime is 444457931. The next prime is 444457961. The reversal of 444457939 is 939754444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444457939 - 2³ = 444457931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444457892 and 444457901.

It is not a weakly prime, because it can be changed into another prime (444457931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222228969 + 222228970.

It is an arithmetic number, because the mean of its divisors is an integer number (222228970).

Almost surely, 2^444457939 is an apocalyptic number.

444457939 is a deficient number, since it is larger than the sum of its proper divisors (1).

444457939 is an equidigital number, since it uses as much as digits as its factorization.

444457939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 49.

The square root of 444457939 is about 21082.1711168466. The cubic root of 444457939 is about 763.1505519957.

The spelling of 444457939 in words is "four hundred forty-four million, four hundred fifty-seven thousand, nine hundred thirty-nine".