448732857 has 4 divisors (see below), whose sum is σ = 598310480. Its totient is φ = 299155236.

The previous prime is 448732813. The next prime is 448732859. The reversal of 448732857 is 758237844.

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 not a de Polignac number, because 448732857 - 2⁶ = 448732793 is a prime.

It is a super-2 number, since 2×448732857² = 402722353902764898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448732859) 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 in 3 ways as a sum of consecutive naturals, for example, 74788807 + ... + 74788812.

It is an arithmetic number, because the mean of its divisors is an integer number (149577620).

Almost surely, 2^448732857 is an apocalyptic number.

It is an amenable number.

448732857 is a deficient number, since it is larger than the sum of its proper divisors (149577623).

448732857 is a wasteful number, since it uses less digits than its factorization.

448732857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149577622.

The product of its digits is 1505280, while the sum is 48.

The square root of 448732857 is about 21183.3155336930. The cubic root of 448732857 is about 765.5894794394.

The spelling of 448732857 in words is "four hundred forty-eight million, seven hundred thirty-two thousand, eight hundred fifty-seven".