23299919 has 2 divisors, whose sum is σ = 23299920. Its totient is φ = 23299918.

The previous prime is 23299907. The next prime is 23299951. The reversal of 23299919 is 91999232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23299919 - 2⁸ = 23299663 is a prime.

It is a super-2 number, since 2×23299919² = 1085772450813122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23299919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23299019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11649959 + 11649960.

It is an arithmetic number, because the mean of its divisors is an integer number (11649960).

Almost surely, 2^23299919 is an apocalyptic number.

23299919 is a deficient number, since it is larger than the sum of its proper divisors (1).

23299919 is an equidigital number, since it uses as much as digits as its factorization.

23299919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 44.

The square root of 23299919 is about 4826.9989641598. The cubic root of 23299919 is about 285.6174936061.

The spelling of 23299919 in words is "twenty-three million, two hundred ninety-nine thousand, nine hundred nineteen".