11908217 has 2 divisors, whose sum is σ = 11908218. Its totient is φ = 11908216.

The previous prime is 11908213. The next prime is 11908219. The reversal of 11908217 is 71280911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10310521 + 1597696 = 3211^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 11908217 - 2² = 11908213 is a prime.

Together with 11908219, it forms a pair of twin primes.

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 11908217.

It is not a weakly prime, because it can be changed into another prime (11908213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954108 + 5954109.

It is an arithmetic number, because the mean of its divisors is an integer number (5954109).

Almost surely, 2^11908217 is an apocalyptic number.

It is an amenable number.

11908217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11908217 is an equidigital number, since it uses as much as digits as its factorization.

11908217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 11908217 is about 3450.8284512563. The cubic root of 11908217 is about 228.3576578534.

The spelling of 11908217 in words is "eleven million, nine hundred eight thousand, two hundred seventeen".