109239249 has 16 divisors (see below), whose sum is σ = 166644608. Its totient is φ = 62353152.

The previous prime is 109239241. The next prime is 109239253. The reversal of 109239249 is 942932901.

It is not a de Polignac number, because 109239249 - 2³ = 109239241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109239241) 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, 21129 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (10415288).

Almost surely, 2^109239249 is an apocalyptic number.

It is an amenable number.

109239249 is a deficient number, since it is larger than the sum of its proper divisors (57405359).

109239249 is a wasteful number, since it uses less digits than its factorization.

109239249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 109239249 is about 10451.7581774551. The cubic root of 109239249 is about 478.0348605844.

The spelling of 109239249 in words is "one hundred nine million, two hundred thirty-nine thousand, two hundred forty-nine".