108994493 has 4 divisors (see below), whose sum is σ = 113733408. Its totient is φ = 104255580.

The previous prime is 108994477. The next prime is 108994511. The reversal of 108994493 is 394499801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394499801 = 1231 ⋅320471.

It is a cyclic number.

It is not a de Polignac number, because 108994493 - 2⁴ = 108994477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108994423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369423 + ... + 2369468.

It is an arithmetic number, because the mean of its divisors is an integer number (28433352).

Almost surely, 2^108994493 is an apocalyptic number.

It is an amenable number.

108994493 is a deficient number, since it is larger than the sum of its proper divisors (4738915).

108994493 is an equidigital number, since it uses as much as digits as its factorization.

108994493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738914.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 108994493 is about 10440.0427681116. The cubic root of 108994493 is about 477.6775732747.

The spelling of 108994493 in words is "one hundred eight million, nine hundred ninety-four thousand, four hundred ninety-three".