109279213 has 4 divisors (see below), whose sum is σ = 115707420. Its totient is φ = 102851008.

The previous prime is 109279201. The next prime is 109279217. The reversal of 109279213 is 312972901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312972901 = 29 ⋅10792169.

It can be written as a sum of positive squares in 2 ways, for example, as 100440484 + 8838729 = 10022^2 + 2973^2 .

It is a cyclic number.

It is not a de Polignac number, because 109279213 - 2¹³ = 109271021 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 (109279217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3214078 + ... + 3214111.

It is an arithmetic number, because the mean of its divisors is an integer number (28926855).

Almost surely, 2^109279213 is an apocalyptic number.

It is an amenable number.

109279213 is a deficient number, since it is larger than the sum of its proper divisors (6428207).

109279213 is an equidigital number, since it uses as much as digits as its factorization.

109279213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428206.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 109279213 is about 10453.6698340822. The cubic root of 109279213 is about 478.0931481081.

The spelling of 109279213 in words is "one hundred nine million, two hundred seventy-nine thousand, two hundred thirteen".