99638093 has 4 divisors (see below), whose sum is σ = 103970208. Its totient is φ = 95305980.

The previous prime is 99638087. The next prime is 99638101. The reversal of 99638093 is 39083699.

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 99638093 - 2⁶ = 99638029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99638053) 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, 2166023 + ... + 2166068.

It is an arithmetic number, because the mean of its divisors is an integer number (25992552).

Almost surely, 2^99638093 is an apocalyptic number.

It is an amenable number.

99638093 is a deficient number, since it is larger than the sum of its proper divisors (4332115).

99638093 is a wasteful number, since it uses less digits than its factorization.

99638093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332114.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 99638093 is about 9981.8882482224. Note that the first 3 decimals coincide. The cubic root of 99638093 is about 463.5982653478.

The spelling of 99638093 in words is "ninety-nine million, six hundred thirty-eight thousand, ninety-three".