99857458 has 4 divisors (see below), whose sum is σ = 149786190. Its totient is φ = 49928728.

The previous prime is 99857449. The next prime is 99857491. The reversal of 99857458 is 85475899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56205009 + 43652449 = 7497^2 + 6607^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99857399 and 99857408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24964363 + ... + 24964366.

Almost surely, 2^99857458 is an apocalyptic number.

99857458 is a deficient number, since it is larger than the sum of its proper divisors (49928732).

99857458 is a wasteful number, since it uses less digits than its factorization.

99857458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49928731.

The product of its digits is 3628800, while the sum is 55.

The square root of 99857458 is about 9992.8703584105. The cubic root of 99857458 is about 463.9382380388.

The spelling of 99857458 in words is "ninety-nine million, eight hundred fifty-seven thousand, four hundred fifty-eight".