99739138 has 4 divisors (see below), whose sum is σ = 149608710. Its totient is φ = 49869568.

The previous prime is 99739127. The next prime is 99739139. The reversal of 99739138 is 83193799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61261929 + 38477209 = 7827^2 + 6203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99739091 and 99739100.

It is not an unprimeable number, because it can be changed into a prime (99739139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24934783 + ... + 24934786.

Almost surely, 2^99739138 is an apocalyptic number.

99739138 is a deficient number, since it is larger than the sum of its proper divisors (49869572).

99739138 is a wasteful number, since it uses less digits than its factorization.

99739138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49869571.

The product of its digits is 367416, while the sum is 49.

The square root of 99739138 is about 9986.9483827644. The cubic root of 99739138 is about 463.7549271859.

The spelling of 99739138 in words is "ninety-nine million, seven hundred thirty-nine thousand, one hundred thirty-eight".