108491293 has 2 divisors, whose sum is σ = 108491294. Its totient is φ = 108491292.

The previous prime is 108491231. The next prime is 108491309. The reversal of 108491293 is 392194801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102860164 + 5631129 = 10142^2 + 2373^2 .

It is an emirp because it is prime and its reverse (392194801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108491293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108491393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54245646 + 54245647.

It is an arithmetic number, because the mean of its divisors is an integer number (54245647).

Almost surely, 2^108491293 is an apocalyptic number.

It is an amenable number.

108491293 is a deficient number, since it is larger than the sum of its proper divisors (1).

108491293 is an equidigital number, since it uses as much as digits as its factorization.

108491293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 108491293 is about 10415.9153702399. The cubic root of 108491293 is about 476.9413335957.

It can be divided in two parts, 108 and 491293, that added together give a square (491401 = 701²).

The spelling of 108491293 in words is "one hundred eight million, four hundred ninety-one thousand, two hundred ninety-three".