111779423 has 8 divisors (see below), whose sum is σ = 127820448. Its totient is φ = 95756544.

The previous prime is 111779401. The next prime is 111779443. The reversal of 111779423 is 324977111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111779423 - 2⁶ = 111779359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111779443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13415 + ... + 20087.

It is an arithmetic number, because the mean of its divisors is an integer number (15977556).

Almost surely, 2^111779423 is an apocalyptic number.

111779423 is a deficient number, since it is larger than the sum of its proper divisors (16041025).

111779423 is an equidigital number, since it uses as much as digits as its factorization.

111779423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9073.

The product of its digits is 10584, while the sum is 35.

The square root of 111779423 is about 10572.5788244874. The cubic root of 111779423 is about 481.7118032331.

The spelling of 111779423 in words is "one hundred eleven million, seven hundred seventy-nine thousand, four hundred twenty-three".