108455993 has 2 divisors, whose sum is σ = 108455994. Its totient is φ = 108455992.

The previous prime is 108455953. The next prime is 108456037. The reversal of 108455993 is 399554801.

It is a happy number.

It is an a-pointer prime, because the next prime (108456037) can be obtained adding 108455993 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105740089 + 2715904 = 10283^2 + 1648^2 .

It is a cyclic number.

It is not a de Polignac number, because 108455993 - 2¹⁸ = 108193849 is a prime.

It is not a weakly prime, because it can be changed into another prime (108455953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54227996 + 54227997.

It is an arithmetic number, because the mean of its divisors is an integer number (54227997).

Almost surely, 2^108455993 is an apocalyptic number.

It is an amenable number.

108455993 is a deficient number, since it is larger than the sum of its proper divisors (1).

108455993 is an equidigital number, since it uses as much as digits as its factorization.

108455993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 108455993 is about 10414.2207101636. The cubic root of 108455993 is about 476.8896002417.

The spelling of 108455993 in words is "one hundred eight million, four hundred fifty-five thousand, nine hundred ninety-three".