444444457 has 2 divisors, whose sum is σ = 444444458. Its totient is φ = 444444456.

The previous prime is 444444443. The next prime is 444444467. The reversal of 444444457 is 754444444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443902761 + 541696 = 21069^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 444444457 - 2²³ = 436055849 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (444444437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222222228 + 222222229.

It is an arithmetic number, because the mean of its divisors is an integer number (222222229).

Almost surely, 2^444444457 is an apocalyptic number.

It is an amenable number.

444444457 is a deficient number, since it is larger than the sum of its proper divisors (1).

444444457 is an equidigital number, since it uses as much as digits as its factorization.

444444457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 573440, while the sum is 40.

The square root of 444444457 is about 21081.8513655703. The cubic root of 444444457 is about 763.1428355551.

The spelling of 444444457 in words is "four hundred forty-four million, four hundred forty-four thousand, four hundred fifty-seven".