109389845 has 16 divisors (see below), whose sum is σ = 135753408. Its totient is φ = 84562560.

The previous prime is 109389829. The next prime is 109389857. The reversal of 109389845 is 548983901.

It is not a de Polignac number, because 109389845 - 2⁴ = 109389829 is a prime.

It is a super-2 number, since 2×109389845² = 23932276378248050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109389845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19442 + ... + 24428.

It is an arithmetic number, because the mean of its divisors is an integer number (8484588).

Almost surely, 2^109389845 is an apocalyptic number.

It is an amenable number.

109389845 is a deficient number, since it is larger than the sum of its proper divisors (26363563).

109389845 is a wasteful number, since it uses less digits than its factorization.

109389845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 109389845 is about 10458.9600343438. The cubic root of 109389845 is about 478.2544308769.

The spelling of 109389845 in words is "one hundred nine million, three hundred eighty-nine thousand, eight hundred forty-five".