23272409 has 2 divisors, whose sum is σ = 23272410. Its totient is φ = 23272408.

The previous prime is 23272391. The next prime is 23272421. The reversal of 23272409 is 90427232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 994009 = 4720^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 23272409 - 2¹² = 23268313 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23272429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11636204 + 11636205.

It is an arithmetic number, because the mean of its divisors is an integer number (11636205).

Almost surely, 2^23272409 is an apocalyptic number.

It is an amenable number.

23272409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23272409 is an equidigital number, since it uses as much as digits as its factorization.

23272409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 23272409 is about 4824.1485259059. The cubic root of 23272409 is about 285.5050406881.

The spelling of 23272409 in words is "twenty-three million, two hundred seventy-two thousand, four hundred nine".