109139015 has 8 divisors (see below), whose sum is σ = 132761328. Its totient is φ = 86114880.

The previous prime is 109138987. The next prime is 109139027. The reversal of 109139015 is 510931901.

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

It is not a de Polignac number, because 109139015 - 2¹² = 109134919 is a prime.

It is a super-2 number, since 2×109139015² = 23822649190340450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149141 + ... + 149870.

It is an arithmetic number, because the mean of its divisors is an integer number (16595166).

Almost surely, 2^109139015 is an apocalyptic number.

109139015 is a deficient number, since it is larger than the sum of its proper divisors (23622313).

109139015 is an equidigital number, since it uses as much as digits as its factorization.

109139015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299089.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 109139015 is about 10446.9619985908. The cubic root of 109139015 is about 477.8886066532. Note that the first 3 decimals are identical.

The spelling of 109139015 in words is "one hundred nine million, one hundred thirty-nine thousand, fifteen".