23695409 has 2 divisors, whose sum is σ = 23695410. Its totient is φ = 23695408.

The previous prime is 23695387. The next prime is 23695423. The reversal of 23695409 is 90459632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 11424400 = 3503^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 23695409 - 2¹² = 23691313 is a prime.

It is a super-2 number, since 2×23695409² = 1122944815354562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23625409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11847704 + 11847705.

It is an arithmetic number, because the mean of its divisors is an integer number (11847705).

Almost surely, 2^23695409 is an apocalyptic number.

It is an amenable number.

23695409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23695409 is an equidigital number, since it uses as much as digits as its factorization.

23695409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 23695409 is about 4867.7930317547. The cubic root of 23695409 is about 287.2244477666.

The spelling of 23695409 in words is "twenty-three million, six hundred ninety-five thousand, four hundred nine".