111445679 has 2 divisors, whose sum is σ = 111445680. Its totient is φ = 111445678.

The previous prime is 111445673. The next prime is 111445699. The reversal of 111445679 is 976544111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111445679 - 2²⁰ = 110397103 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111445673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722839 + 55722840.

It is an arithmetic number, because the mean of its divisors is an integer number (55722840).

Almost surely, 2^111445679 is an apocalyptic number.

111445679 is a deficient number, since it is larger than the sum of its proper divisors (1).

111445679 is an equidigital number, since it uses as much as digits as its factorization.

111445679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 111445679 is about 10556.7835537156. The cubic root of 111445679 is about 481.2319036542.

The spelling of 111445679 in words is "one hundred eleven million, four hundred forty-five thousand, six hundred seventy-nine".