23990089 has 2 divisors, whose sum is σ = 23990090. Its totient is φ = 23990088.

The previous prime is 23990059. The next prime is 23990101. The reversal of 23990089 is 98009932.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13801225 + 10188864 = 3715^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 23990089 - 2¹³ = 23981897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23990059) 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, 11995044 + 11995045.

It is an arithmetic number, because the mean of its divisors is an integer number (11995045).

Almost surely, 2^23990089 is an apocalyptic number.

It is an amenable number.

23990089 is a deficient number, since it is larger than the sum of its proper divisors (1).

23990089 is an equidigital number, since it uses as much as digits as its factorization.

23990089 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 40.

The square root of 23990089 is about 4897.9678439124. The cubic root of 23990089 is about 288.4102026627.

The spelling of 23990089 in words is "twenty-three million, nine hundred ninety thousand, eighty-nine".