449625857 has 4 divisors (see below), whose sum is σ = 455043120. Its totient is φ = 444208596.

The previous prime is 449625851. The next prime is 449625859. The reversal of 449625857 is 758526944.

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 449625857 - 2¹² = 449621761 is a prime.

It is a super-2 number, since 2×449625857² = 404326822565968898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449625851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708507 + ... + 2708672.

It is an arithmetic number, because the mean of its divisors is an integer number (113760780).

Almost surely, 2^449625857 is an apocalyptic number.

It is an amenable number.

449625857 is a deficient number, since it is larger than the sum of its proper divisors (5417263).

449625857 is an equidigital number, since it uses as much as digits as its factorization.

449625857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417262.

The product of its digits is 2419200, while the sum is 50.

The square root of 449625857 is about 21204.3829667359. The cubic root of 449625857 is about 766.0969962408.

The spelling of 449625857 in words is "four hundred forty-nine million, six hundred twenty-five thousand, eight hundred fifty-seven".