99909123 has 8 divisors (see below), whose sum is σ = 133271568. Its totient is φ = 66576384.

The previous prime is 99909113. The next prime is 99909137. The reversal of 99909123 is 32190999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99909123 - 2⁴ = 99909107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99909113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211 + ... + 14307.

It is an arithmetic number, because the mean of its divisors is an integer number (16658946).

Almost surely, 2^99909123 is an apocalyptic number.

99909123 is a deficient number, since it is larger than the sum of its proper divisors (33362445).

99909123 is a wasteful number, since it uses less digits than its factorization.

99909123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14853.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 99909123 is about 9995.4551172020. The cubic root of 99909123 is about 464.0182361912.

The spelling of 99909123 in words is "ninety-nine million, nine hundred nine thousand, one hundred twenty-three".