99239490 has 48 divisors (see below), whose sum is σ = 294884928. Its totient is φ = 22683168.

The previous prime is 99239477. The next prime is 99239521. The reversal of 99239490 is 9493299.

It is a super-3 number, since 3×99239490³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78132 + ... + 79391.

It is an arithmetic number, because the mean of its divisors is an integer number (6143436).

Almost surely, 2^99239490 is an apocalyptic number.

99239490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99239490 is an abundant number, since it is smaller than the sum of its proper divisors (195645438).

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

99239490 is a wasteful number, since it uses less digits than its factorization.

99239490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157543 (or 157540 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 99239490 is about 9961.9019268411. The cubic root of 99239490 is about 462.9792295851.

The spelling of 99239490 in words is "ninety-nine million, two hundred thirty-nine thousand, four hundred ninety".