108388997 has 2 divisors, whose sum is σ = 108388998. Its totient is φ = 108388996.

The previous prime is 108388897. The next prime is 108388999. The reversal of 108388997 is 799883801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106523041 + 1865956 = 10321^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 108388997 - 2²⁴ = 91611781 is a prime.

Together with 108388999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108388999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54194498 + 54194499.

It is an arithmetic number, because the mean of its divisors is an integer number (54194499).

Almost surely, 2^108388997 is an apocalyptic number.

It is an amenable number.

108388997 is a deficient number, since it is larger than the sum of its proper divisors (1).

108388997 is an equidigital number, since it uses as much as digits as its factorization.

108388997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 108388997 is about 10411.0036499850. The cubic root of 108388997 is about 476.7913844408.

The spelling of 108388997 in words is "one hundred eight million, three hundred eighty-eight thousand, nine hundred ninety-seven".