99923842 has 4 divisors (see below), whose sum is σ = 149885766. Its totient is φ = 49961920.

The previous prime is 99923809. The next prime is 99923851. The reversal of 99923842 is 24832999.

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., 82609921 + 17313921 = 9089^2 + 4161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99923792 and 99923801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24980959 + ... + 24980962.

Almost surely, 2^99923842 is an apocalyptic number.

99923842 is a deficient number, since it is larger than the sum of its proper divisors (49961924).

99923842 is a wasteful number, since it uses less digits than its factorization.

99923842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49961923.

The product of its digits is 279936, while the sum is 46.

The square root of 99923842 is about 9996.1913747187. The cubic root of 99923842 is about 464.0410220618.

The spelling of 99923842 in words is "ninety-nine million, nine hundred twenty-three thousand, eight hundred forty-two".