109389749 has 8 divisors (see below), whose sum is σ = 125131200. Its totient is φ = 93676896.

The previous prime is 109389739. The next prime is 109389773. The reversal of 109389749 is 947983901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109389749 - 2⁴ = 109389733 is a prime.

It is a super-2 number, since 2×109389749² = 23932234372566002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109389697 and 109389706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109389719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802 + ... + 14900.

It is an arithmetic number, because the mean of its divisors is an integer number (15641400).

Almost surely, 2^109389749 is an apocalyptic number.

It is an amenable number.

109389749 is a deficient number, since it is larger than the sum of its proper divisors (15741451).

109389749 is a wasteful number, since it uses less digits than its factorization.

109389749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14299.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 109389749 is about 10458.9554449763. The cubic root of 109389749 is about 478.2542909723.

The spelling of 109389749 in words is "one hundred nine million, three hundred eighty-nine thousand, seven hundred forty-nine".