109213839 has 20 divisors (see below), whose sum is σ = 186454224. Its totient is φ = 62407584.

The previous prime is 109213823. The next prime is 109213847. The reversal of 109213839 is 938312901.

It is not a de Polignac number, because 109213839 - 2⁴ = 109213823 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109213879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 95742 + ... + 96875.

Almost surely, 2^109213839 is an apocalyptic number.

109213839 is a deficient number, since it is larger than the sum of its proper divisors (77240385).

109213839 is an equidigital number, since it uses as much as digits as its factorization.

109213839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192636 (or 192627 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 109213839 is about 10450.5425218024. The cubic root of 109213839 is about 477.9977926872.

The spelling of 109213839 in words is "one hundred nine million, two hundred thirteen thousand, eight hundred thirty-nine".