99538 has 8 divisors (see below), whose sum is σ = 150732. Its totient is φ = 49296.

The previous prime is 99529. The next prime is 99551. The reversal of 99538 is 83599.

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 13689 = 293^2 + 117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156 + ... + 472.

2⁹⁹⁵³⁸ is an apocalyptic number.

99538 is a deficient number, since it is larger than the sum of its proper divisors (51194).

99538 is a wasteful number, since it uses less digits than its factorization.

99538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476.

The product of its digits is 9720, while the sum is 34.

The square root of 99538 is about 315.4964342112. The cubic root of 99538 is about 46.3442975048.

The spelling of 99538 in words is "ninety-nine thousand, five hundred thirty-eight".