23449813 has 2 divisors, whose sum is σ = 23449814. Its totient is φ = 23449812.

The previous prime is 23449801. The next prime is 23449837. The reversal of 23449813 is 31894432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 4588164 = 4343^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 23449813 - 2¹⁷ = 23318741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23449843) 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, 11724906 + 11724907.

It is an arithmetic number, because the mean of its divisors is an integer number (11724907).

Almost surely, 2^23449813 is an apocalyptic number.

It is an amenable number.

23449813 is a deficient number, since it is larger than the sum of its proper divisors (1).

23449813 is an equidigital number, since it uses as much as digits as its factorization.

23449813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 23449813 is about 4842.5006969540. The cubic root of 23449813 is about 286.2286669456.

The spelling of 23449813 in words is "twenty-three million, four hundred forty-nine thousand, eight hundred thirteen".