23783609 has 2 divisors, whose sum is σ = 23783610. Its totient is φ = 23783608.

The previous prime is 23783579. The next prime is 23783621. The reversal of 23783609 is 90638732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14992384 + 8791225 = 3872^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 23783609 - 2²⁴ = 7006393 is a prime.

It is not a weakly prime, because it can be changed into another prime (23783699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11891804 + 11891805.

It is an arithmetic number, because the mean of its divisors is an integer number (11891805).

Almost surely, 2^23783609 is an apocalyptic number.

It is an amenable number.

23783609 is a deficient number, since it is larger than the sum of its proper divisors (1).

23783609 is an equidigital number, since it uses as much as digits as its factorization.

23783609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 23783609 is about 4876.8441640061. The cubic root of 23783609 is about 287.5803792898.

The spelling of 23783609 in words is "twenty-three million, seven hundred eighty-three thousand, six hundred nine".