23149589 has 2 divisors, whose sum is σ = 23149590. Its totient is φ = 23149588.

The previous prime is 23149583. The next prime is 23149663. The reversal of 23149589 is 98594132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 6682225 = 4058^2 + 2585^2 .

It is a cyclic number.

It is not a de Polignac number, because 23149589 - 2⁴ = 23149573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23149583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11574794 + 11574795.

It is an arithmetic number, because the mean of its divisors is an integer number (11574795).

Almost surely, 2^23149589 is an apocalyptic number.

It is an amenable number.

23149589 is a deficient number, since it is larger than the sum of its proper divisors (1).

23149589 is an equidigital number, since it uses as much as digits as its factorization.

23149589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 23149589 is about 4811.4019786337. The cubic root of 23149589 is about 285.0019041629.

The spelling of 23149589 in words is "twenty-three million, one hundred forty-nine thousand, five hundred eighty-nine".