23890369 has 2 divisors, whose sum is σ = 23890370. Its totient is φ = 23890368.

The previous prime is 23890309. The next prime is 23890381. The reversal of 23890369 is 96309832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13727025 + 10163344 = 3705^2 + 3188^2 .

It is a cyclic number.

It is not a de Polignac number, because 23890369 - 2¹⁹ = 23366081 is a prime.

It is a super-2 number, since 2×23890369² = 1141499461912322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (23890309) 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, 11945184 + 11945185.

It is an arithmetic number, because the mean of its divisors is an integer number (11945185).

Almost surely, 2^23890369 is an apocalyptic number.

It is an amenable number.

23890369 is a deficient number, since it is larger than the sum of its proper divisors (1).

23890369 is an equidigital number, since it uses as much as digits as its factorization.

23890369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 23890369 is about 4887.7775113031. Note that the first 3 decimals coincide. The cubic root of 23890369 is about 288.0100345333.

The spelling of 23890369 in words is "twenty-three million, eight hundred ninety thousand, three hundred sixty-nine".