99388693 has 8 divisors (see below), whose sum is σ = 100387512. Its totient is φ = 98394816.

The previous prime is 99388687. The next prime is 99388741. The reversal of 99388693 is 39688399.

It can be written as a sum of positive squares in 4 ways, for example, as 8720209 + 90668484 = 2953^2 + 9522^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99388693 - 2⁵ = 99388661 is a prime.

It is a super-2 number, since 2×99388693² = 19756224592496498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99388643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48771 + ... + 50767.

It is an arithmetic number, because the mean of its divisors is an integer number (12548439).

Almost surely, 2^99388693 is an apocalyptic number.

It is an amenable number.

99388693 is a deficient number, since it is larger than the sum of its proper divisors (998819).

99388693 is a wasteful number, since it uses less digits than its factorization.

99388693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471.

The product of its digits is 2519424, while the sum is 55.

The square root of 99388693 is about 9969.3877946442. The cubic root of 99388693 is about 463.2111376027.

The spelling of 99388693 in words is "ninety-nine million, three hundred eighty-eight thousand, six hundred ninety-three".