23004409 has 2 divisors, whose sum is σ = 23004410. Its totient is φ = 23004408.

The previous prime is 23004391. The next prime is 23004433. The reversal of 23004409 is 90440032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 394384 = 4755^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 23004409 - 2¹¹ = 23002361 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23004409.

It is not a weakly prime, because it can be changed into another prime (23004469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11502204 + 11502205.

It is an arithmetic number, because the mean of its divisors is an integer number (11502205).

Almost surely, 2^23004409 is an apocalyptic number.

It is an amenable number.

23004409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23004409 is an equidigital number, since it uses as much as digits as its factorization.

23004409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23004409 is about 4796.2911713114. The cubic root of 23004409 is about 284.4048687220.

The spelling of 23004409 in words is "twenty-three million, four thousand, four hundred nine".