108919397 has 2 divisors, whose sum is σ = 108919398. Its totient is φ = 108919396.

The previous prime is 108919373. The next prime is 108919417. The reversal of 108919397 is 793919801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 39929761 = 8306^2 + 6319^2 .

It is an emirp because it is prime and its reverse (793919801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108919397 - 2⁶ = 108919333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108919297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54459698 + 54459699.

It is an arithmetic number, because the mean of its divisors is an integer number (54459699).

Almost surely, 2^108919397 is an apocalyptic number.

It is an amenable number.

108919397 is a deficient number, since it is larger than the sum of its proper divisors (1).

108919397 is an equidigital number, since it uses as much as digits as its factorization.

108919397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 108919397 is about 10436.4456114139. The cubic root of 108919397 is about 477.5678432153.

The spelling of 108919397 in words is "one hundred eight million, nine hundred nineteen thousand, three hundred ninety-seven".