444469939 has 2 divisors, whose sum is σ = 444469940. Its totient is φ = 444469938.

The previous prime is 444469919. The next prime is 444469967. The reversal of 444469939 is 939964444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444469939 - 2¹⁹ = 443945651 is a prime.

It is not a weakly prime, because it can be changed into another prime (444469919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222234969 + 222234970.

It is an arithmetic number, because the mean of its divisors is an integer number (222234970).

Almost surely, 2^444469939 is an apocalyptic number.

444469939 is a deficient number, since it is larger than the sum of its proper divisors (1).

444469939 is an equidigital number, since it uses as much as digits as its factorization.

444469939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The square root of 444469939 is about 21082.4557155944. The cubic root of 444469939 is about 763.1574200803.

The spelling of 444469939 in words is "four hundred forty-four million, four hundred sixty-nine thousand, nine hundred thirty-nine".