109278339 has 4 divisors (see below), whose sum is σ = 145704456. Its totient is φ = 72852224.

The previous prime is 109278331. The next prime is 109278343. The reversal of 109278339 is 933872901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109278339 - 2³ = 109278331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109278339.

It is not an unprimeable number, because it can be changed into a prime (109278331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18213054 + ... + 18213059.

It is an arithmetic number, because the mean of its divisors is an integer number (36426114).

Almost surely, 2^109278339 is an apocalyptic number.

109278339 is a deficient number, since it is larger than the sum of its proper divisors (36426117).

109278339 is an equidigital number, since it uses as much as digits as its factorization.

109278339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36426116.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 109278339 is about 10453.6280304974. The cubic root of 109278339 is about 478.0918735305.

The spelling of 109278339 in words is "one hundred nine million, two hundred seventy-eight thousand, three hundred thirty-nine".