109438279 has 2 divisors, whose sum is σ = 109438280. Its totient is φ = 109438278.

The previous prime is 109438261. The next prime is 109438297. The reversal of 109438279 is 972834901.

Together with next prime (109438297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (109438261) and next prime (109438297).

It is a cyclic number.

It is not a de Polignac number, because 109438279 - 2⁷ = 109438151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109438079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54719139 + 54719140.

It is an arithmetic number, because the mean of its divisors is an integer number (54719140).

Almost surely, 2^109438279 is an apocalyptic number.

109438279 is a deficient number, since it is larger than the sum of its proper divisors (1).

109438279 is an equidigital number, since it uses as much as digits as its factorization.

109438279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 109438279 is about 10461.2752090747. The cubic root of 109438279 is about 478.3250052440.

The spelling of 109438279 in words is "one hundred nine million, four hundred thirty-eight thousand, two hundred seventy-nine".