23099819 has 2 divisors, whose sum is σ = 23099820. Its totient is φ = 23099818.

The previous prime is 23099809. The next prime is 23099873. The reversal of 23099819 is 91899032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23099819 - 2⁸ = 23099563 is a prime.

It is a super-2 number, since 2×23099819² = 1067203275665522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23099809) 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, 11549909 + 11549910.

It is an arithmetic number, because the mean of its divisors is an integer number (11549910).

Almost surely, 2^23099819 is an apocalyptic number.

23099819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23099819 is an equidigital number, since it uses as much as digits as its factorization.

23099819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 23099819 is about 4806.2271065775. The cubic root of 23099819 is about 284.7975128857.

The spelling of 23099819 in words is "twenty-three million, ninety-nine thousand, eight hundred nineteen".