23390417 has 2 divisors, whose sum is σ = 23390418. Its totient is φ = 23390416.

The previous prime is 23390413. The next prime is 23390429. The reversal of 23390417 is 71409332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21911761 + 1478656 = 4681^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 23390417 - 2² = 23390413 is a prime.

It is a super-2 number, since 2×23390417² = 1094223214867778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23390417.

It is not a weakly prime, because it can be changed into another prime (23390413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11695208 + 11695209.

It is an arithmetic number, because the mean of its divisors is an integer number (11695209).

Almost surely, 2^23390417 is an apocalyptic number.

It is an amenable number.

23390417 is a deficient number, since it is larger than the sum of its proper divisors (1).

23390417 is an equidigital number, since it uses as much as digits as its factorization.

23390417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 23390417 is about 4836.3640268284. The cubic root of 23390417 is about 285.9867998863.

Adding to 23390417 its reverse (71409332), we get a palindrome (94799749).

The spelling of 23390417 in words is "twenty-three million, three hundred ninety thousand, four hundred seventeen".