112779909 has 12 divisors (see below), whose sum is σ = 177713952. Its totient is φ = 68351400.

The previous prime is 112779899. The next prime is 112779917. The reversal of 112779909 is 909977211.

It is not a de Polignac number, because 112779909 - 2⁴ = 112779893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112779929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569497 + ... + 569694.

It is an arithmetic number, because the mean of its divisors is an integer number (14809496).

Almost surely, 2^112779909 is an apocalyptic number.

It is an amenable number.

112779909 is a deficient number, since it is larger than the sum of its proper divisors (64934043).

112779909 is a wasteful number, since it uses less digits than its factorization.

112779909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139208 (or 1139205 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 45.

The square root of 112779909 is about 10619.7885572171. The cubic root of 112779909 is about 483.1447298489.

The spelling of 112779909 in words is "one hundred twelve million, seven hundred seventy-nine thousand, nine hundred nine".