99923938 has 4 divisors (see below), whose sum is σ = 149885910. Its totient is φ = 49961968.

The previous prime is 99923911. The next prime is 99923951. The reversal of 99923938 is 83932999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83932999 = 5821 ⋅14419.

It can be written as a sum of positive squares in only one way, i.e., 98267569 + 1656369 = 9913^2 + 1287^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24980983 + ... + 24980986.

Almost surely, 2^99923938 is an apocalyptic number.

99923938 is a deficient number, since it is larger than the sum of its proper divisors (49961972).

99923938 is a wasteful number, since it uses less digits than its factorization.

99923938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49961971.

The product of its digits is 944784, while the sum is 52.

The square root of 99923938 is about 9996.1961765464. The cubic root of 99923938 is about 464.0411706681.

The spelling of 99923938 in words is "ninety-nine million, nine hundred twenty-three thousand, nine hundred thirty-eight".