444531457 has 4 divisors (see below), whose sum is σ = 444794800. Its totient is φ = 444268116.

The previous prime is 444531449. The next prime is 444531473. The reversal of 444531457 is 754135444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 444531457 - 2³ = 444531449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444531407) 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 in 3 ways as a sum of consecutive naturals, for example, 129123 + ... + 132520.

It is an arithmetic number, because the mean of its divisors is an integer number (111198700).

Almost surely, 2^444531457 is an apocalyptic number.

It is an amenable number.

444531457 is a deficient number, since it is larger than the sum of its proper divisors (263343).

444531457 is a wasteful number, since it uses less digits than its factorization.

444531457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263342.

The product of its digits is 134400, while the sum is 37.

The square root of 444531457 is about 21083.9146507474. The cubic root of 444531457 is about 763.1926273750.

The spelling of 444531457 in words is "four hundred forty-four million, five hundred thirty-one thousand, four hundred fifty-seven".