111345779 has 4 divisors (see below), whose sum is σ = 111911184. Its totient is φ = 110780376.

The previous prime is 111345749. The next prime is 111345797. The reversal of 111345779 is 977543111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977543111 = 163 ⋅5997197.

It is a cyclic number.

It is not a de Polignac number, because 111345779 - 2¹² = 111341683 is a prime.

It is a super-2 number, since 2×111345779² = 24795765002233682, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111345749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282407 + ... + 282800.

It is an arithmetic number, because the mean of its divisors is an integer number (27977796).

Almost surely, 2^111345779 is an apocalyptic number.

111345779 is a deficient number, since it is larger than the sum of its proper divisors (565405).

111345779 is an equidigital number, since it uses as much as digits as its factorization.

111345779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565404.

The product of its digits is 26460, while the sum is 38.

The square root of 111345779 is about 10552.0509380878. The cubic root of 111345779 is about 481.0880684404.

The spelling of 111345779 in words is "one hundred eleven million, three hundred forty-five thousand, seven hundred seventy-nine".