23998394089 has 2 divisors, whose sum is σ = 23998394090. Its totient is φ = 23998394088.

The previous prime is 23998394083. The next prime is 23998394177. The reversal of 23998394089 is 98049389932.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22258252864 + 1740141225 = 149192^2 + 41715^2 .

It is a cyclic number.

It is not a de Polignac number, because 23998394089 - 2¹³ = 23998385897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23998394089.

It is not a weakly prime, because it can be changed into another prime (23998394083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11999197044 + 11999197045.

It is an arithmetic number, because the mean of its divisors is an integer number (11999197045).

Almost surely, 2^23998394089 is an apocalyptic number.

It is an amenable number.

23998394089 is a deficient number, since it is larger than the sum of its proper divisors (1).

23998394089 is an equidigital number, since it uses as much as digits as its factorization.

23998394089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30233088, while the sum is 64.

The spelling of 23998394089 in words is "twenty-three billion, nine hundred ninety-eight million, three hundred ninety-four thousand, eighty-nine".