109447879 has 2 divisors, whose sum is σ = 109447880. Its totient is φ = 109447878.

The previous prime is 109447859. The next prime is 109447883. The reversal of 109447879 is 978744901.

It is a strong prime.

It is an emirp because it is prime and its reverse (978744901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109447879 - 2¹⁷ = 109316807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109447829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54723939 + 54723940.

It is an arithmetic number, because the mean of its divisors is an integer number (54723940).

Almost surely, 2^109447879 is an apocalyptic number.

109447879 is a deficient number, since it is larger than the sum of its proper divisors (1).

109447879 is an equidigital number, since it uses as much as digits as its factorization.

109447879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 109447879 is about 10461.7340340882. The cubic root of 109447879 is about 478.3389911663.

The spelling of 109447879 in words is "one hundred nine million, four hundred forty-seven thousand, eight hundred seventy-nine".