23533969 has 2 divisors, whose sum is σ = 23533970. Its totient is φ = 23533968.

The previous prime is 23533949. The next prime is 23533987. The reversal of 23533969 is 96933532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12873744 + 10660225 = 3588^2 + 3265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23533969 is a prime.

It is a super-2 number, since 2×23533969² = 1107695393785922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23533919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766984 + 11766985.

It is an arithmetic number, because the mean of its divisors is an integer number (11766985).

Almost surely, 2^23533969 is an apocalyptic number.

It is an amenable number.

23533969 is a deficient number, since it is larger than the sum of its proper divisors (1).

23533969 is an equidigital number, since it uses as much as digits as its factorization.

23533969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 40.

The square root of 23533969 is about 4851.1822270453. The cubic root of 23533969 is about 286.5706611688.

The spelling of 23533969 in words is "twenty-three million, five hundred thirty-three thousand, nine hundred sixty-nine".