109890843 has 16 divisors (see below), whose sum is σ = 150855936. Its totient is φ = 71114400.

The previous prime is 109890821. The next prime is 109890853. The reversal of 109890843 is 348098901.

It is not a de Polignac number, because 109890843 - 2⁶ = 109890779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109890795 and 109890804.

It is not an unprimeable number, because it can be changed into a prime (109890853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18993 + ... + 24093.

It is an arithmetic number, because the mean of its divisors is an integer number (9428496).

Almost surely, 2^109890843 is an apocalyptic number.

109890843 is a deficient number, since it is larger than the sum of its proper divisors (40965093).

109890843 is a wasteful number, since it uses less digits than its factorization.

109890843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 109890843 is about 10482.8833342740. The cubic root of 109890843 is about 478.9834432470.

The spelling of 109890843 in words is "one hundred nine million, eight hundred ninety thousand, eight hundred forty-three".