109442279 has 2 divisors, whose sum is σ = 109442280. Its totient is φ = 109442278.

The previous prime is 109442269. The next prime is 109442293. The reversal of 109442279 is 972244901.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109442279 is a prime.

It is a super-2 number, since 2×109442279² = 23955224865427682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109442219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54721139 + 54721140.

It is an arithmetic number, because the mean of its divisors is an integer number (54721140).

Almost surely, 2^109442279 is an apocalyptic number.

109442279 is a deficient number, since it is larger than the sum of its proper divisors (1).

109442279 is an equidigital number, since it uses as much as digits as its factorization.

109442279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 109442279 is about 10461.4663886092. The cubic root of 109442279 is about 478.3308328110.

The spelling of 109442279 in words is "one hundred nine million, four hundred forty-two thousand, two hundred seventy-nine".