109912539 has 16 divisors (see below), whose sum is σ = 160191360. Its totient is φ = 66480960.

The previous prime is 109912507. The next prime is 109912547. The reversal of 109912539 is 935219901.

It is not a de Polignac number, because 109912539 - 2⁵ = 109912507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109912497 and 109912506.

It is not an unprimeable number, because it can be changed into a prime (109912559) 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, 15007 + ... + 21095.

It is an arithmetic number, because the mean of its divisors is an integer number (10011960).

Almost surely, 2^109912539 is an apocalyptic number.

109912539 is a deficient number, since it is larger than the sum of its proper divisors (50278821).

109912539 is a wasteful number, since it uses less digits than its factorization.

109912539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 109912539 is about 10483.9181129957. The cubic root of 109912539 is about 479.0149634376.

It can be divided in two parts, 10991 and 2539, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 109912539 in words is "one hundred nine million, nine hundred twelve thousand, five hundred thirty-nine".