23404417 has 2 divisors, whose sum is σ = 23404418. Its totient is φ = 23404416.

The previous prime is 23404391. The next prime is 23404439. The reversal of 23404417 is 71440432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 8473921 = 3864^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 23404417 - 2²³ = 15015809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23404391 and 23404400.

It is not a weakly prime, because it can be changed into another prime (23404477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702208 + 11702209.

It is an arithmetic number, because the mean of its divisors is an integer number (11702209).

Almost surely, 2^23404417 is an apocalyptic number.

It is an amenable number.

23404417 is a deficient number, since it is larger than the sum of its proper divisors (1).

23404417 is an equidigital number, since it uses as much as digits as its factorization.

23404417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 23404417 is about 4837.8111786220. The cubic root of 23404417 is about 286.0438462778.

Adding to 23404417 its reverse (71440432), we get a palindrome (94844849).

The spelling of 23404417 in words is "twenty-three million, four hundred four thousand, four hundred seventeen".