99987323 has 4 divisors (see below), whose sum is σ = 100405920. Its totient is φ = 99568728.

The previous prime is 99987313. The next prime is 99987343. The reversal of 99987323 is 32378999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32378999 = 17 ⋅1904647.

It is a cyclic number.

It is not a de Polignac number, because 99987323 - 2⁸ = 99987067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99987313) 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, 208940 + ... + 209417.

It is an arithmetic number, because the mean of its divisors is an integer number (25101480).

Almost surely, 2^99987323 is an apocalyptic number.

99987323 is a deficient number, since it is larger than the sum of its proper divisors (418597).

99987323 is a wasteful number, since it uses less digits than its factorization.

99987323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418596.

The product of its digits is 734832, while the sum is 50.

The square root of 99987323 is about 9999.3661299104. The cubic root of 99987323 is about 464.1392687252.

The spelling of 99987323 in words is "ninety-nine million, nine hundred eighty-seven thousand, three hundred twenty-three".