23842649 has 2 divisors, whose sum is σ = 23842650. Its totient is φ = 23842648.

The previous prime is 23842639. The next prime is 23842681. The reversal of 23842649 is 94624832.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 2866249 = 4580^2 + 1693^2 .

It is a cyclic number.

It is not a de Polignac number, because 23842649 - 2²⁴ = 7065433 is a prime.

It is a super-2 number, since 2×23842649² = 1136943822674402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23842639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11921324 + 11921325.

It is an arithmetic number, because the mean of its divisors is an integer number (11921325).

Almost surely, 2^23842649 is an apocalyptic number.

It is an amenable number.

23842649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23842649 is an equidigital number, since it uses as much as digits as its factorization.

23842649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The square root of 23842649 is about 4882.8935069280. The cubic root of 23842649 is about 287.8181440979.

The spelling of 23842649 in words is "twenty-three million, eight hundred forty-two thousand, six hundred forty-nine".