109279839 has 4 divisors (see below), whose sum is σ = 145706456. Its totient is φ = 72853224.

The previous prime is 109279837. The next prime is 109279847. The reversal of 109279839 is 938972901.

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

It is not a de Polignac number, because 109279839 - 2¹ = 109279837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109279837) 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, 18213304 + ... + 18213309.

It is an arithmetic number, because the mean of its divisors is an integer number (36426614).

Almost surely, 2^109279839 is an apocalyptic number.

109279839 is a deficient number, since it is larger than the sum of its proper divisors (36426617).

109279839 is an equidigital number, since it uses as much as digits as its factorization.

109279839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36426616.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 109279839 is about 10453.6997756775. The cubic root of 109279839 is about 478.0940610165.

The spelling of 109279839 in words is "one hundred nine million, two hundred seventy-nine thousand, eight hundred thirty-nine".