107843989 has 4 divisors (see below), whose sum is σ = 117648000. Its totient is φ = 98039980.

The previous prime is 107843969. The next prime is 107843993. The reversal of 107843989 is 989348701.

It is a happy number.

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: 989348701 = 11 ⋅89940791.

It is a cyclic number.

It is not a de Polignac number, because 107843989 - 2²⁵ = 74289557 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107843969) 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, 4901989 + ... + 4902010.

It is an arithmetic number, because the mean of its divisors is an integer number (29412000).

Almost surely, 2^107843989 is an apocalyptic number.

It is an amenable number.

107843989 is a deficient number, since it is larger than the sum of its proper divisors (9804011).

107843989 is an equidigital number, since it uses as much as digits as its factorization.

107843989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9804010.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 107843989 is about 10384.7960499954. The cubic root of 107843989 is about 475.9908976557.

The spelling of 107843989 in words is "one hundred seven million, eight hundred forty-three thousand, nine hundred eighty-nine".