23099789 has 2 divisors, whose sum is σ = 23099790. Its totient is φ = 23099788.

The previous prime is 23099777. The next prime is 23099807. The reversal of 23099789 is 98799032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 537289 = 4750^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 23099789 - 2²⁰ = 22051213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23099749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11549894 + 11549895.

It is an arithmetic number, because the mean of its divisors is an integer number (11549895).

Almost surely, 2^23099789 is an apocalyptic number.

It is an amenable number.

23099789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23099789 is an equidigital number, since it uses as much as digits as its factorization.

23099789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 23099789 is about 4806.2239856253. The cubic root of 23099789 is about 284.7973895957.

The spelling of 23099789 in words is "twenty-three million, ninety-nine thousand, seven hundred eighty-nine".