99448457 has 4 divisors (see below), whose sum is σ = 100414080. Its totient is φ = 98482836.

The previous prime is 99448423. The next prime is 99448469. The reversal of 99448457 is 75484499.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75484499 = 2647 ⋅28517.

It is a cyclic number.

It is not a de Polignac number, because 99448457 - 2⁸ = 99448201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99448477) 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, 482657 + ... + 482862.

It is an arithmetic number, because the mean of its divisors is an integer number (25103520).

Almost surely, 2^99448457 is an apocalyptic number.

It is an amenable number.

99448457 is a deficient number, since it is larger than the sum of its proper divisors (965623).

99448457 is a wasteful number, since it uses less digits than its factorization.

99448457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965622.

The product of its digits is 1451520, while the sum is 50.

The square root of 99448457 is about 9972.3847198150. The cubic root of 99448457 is about 463.3039644043.

The spelling of 99448457 in words is "ninety-nine million, four hundred forty-eight thousand, four hundred fifty-seven".