23149289 has 2 divisors, whose sum is σ = 23149290. Its totient is φ = 23149288.

The previous prime is 23149283. The next prime is 23149307. The reversal of 23149289 is 98294132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 4443664 = 4325^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 23149289 - 2²⁰ = 22100713 is a prime.

It is not a weakly prime, because it can be changed into another prime (23149283) 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, 11574644 + 11574645.

It is an arithmetic number, because the mean of its divisors is an integer number (11574645).

Almost surely, 2^23149289 is an apocalyptic number.

It is an amenable number.

23149289 is a deficient number, since it is larger than the sum of its proper divisors (1).

23149289 is an equidigital number, since it uses as much as digits as its factorization.

23149289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 23149289 is about 4811.3708025884. The cubic root of 23149289 is about 285.0006730260. Note that the first 3 decimals are identical.

The spelling of 23149289 in words is "twenty-three million, one hundred forty-nine thousand, two hundred eighty-nine".