109743979 has 2 divisors, whose sum is σ = 109743980. Its totient is φ = 109743978.

The previous prime is 109743913. The next prime is 109744001. The reversal of 109743979 is 979347901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109743979 - 2¹⁵ = 109711211 is a prime.

It is not a weakly prime, because it can be changed into another prime (109749979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54871989 + 54871990.

It is an arithmetic number, because the mean of its divisors is an integer number (54871990).

Almost surely, 2^109743979 is an apocalyptic number.

109743979 is a deficient number, since it is larger than the sum of its proper divisors (1).

109743979 is an equidigital number, since it uses as much as digits as its factorization.

109743979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 109743979 is about 10475.8760492858. The cubic root of 109743979 is about 478.7699684218.

The spelling of 109743979 in words is "one hundred nine million, seven hundred forty-three thousand, nine hundred seventy-nine".