99923442 has 16 divisors (see below), whose sum is σ = 199945152. Its totient is φ = 33291440.

The previous prime is 99923419. The next prime is 99923449. The reversal of 99923442 is 24432999.

It is a super-2 number, since 2×99923442² = 19969388522254728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99923394 and 99923403.

It is not an unprimeable number, because it can be changed into a prime (99923449) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 20392 + ... + 24812.

It is an arithmetic number, because the mean of its divisors is an integer number (12496572).

Almost surely, 2^99923442 is an apocalyptic number.

99923442 is an abundant number, since it is smaller than the sum of its proper divisors (100021710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99923442 is a wasteful number, since it uses less digits than its factorization.

99923442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193.

The product of its digits is 139968, while the sum is 42.

The square root of 99923442 is about 9996.1713670785. The cubic root of 99923442 is about 464.0404028681.

The spelling of 99923442 in words is "ninety-nine million, nine hundred twenty-three thousand, four hundred forty-two".