111449279 has 2 divisors, whose sum is σ = 111449280. Its totient is φ = 111449278.

The previous prime is 111449251. The next prime is 111449293. The reversal of 111449279 is 972944111.

It is a strong prime.

It is an emirp because it is prime and its reverse (972944111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111449279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111449179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55724639 + 55724640.

It is an arithmetic number, because the mean of its divisors is an integer number (55724640).

Almost surely, 2^111449279 is an apocalyptic number.

111449279 is a deficient number, since it is larger than the sum of its proper divisors (1).

111449279 is an equidigital number, since it uses as much as digits as its factorization.

111449279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 111449279 is about 10556.9540588183. The cubic root of 111449279 is about 481.2370853002.

The spelling of 111449279 in words is "one hundred eleven million, four hundred forty-nine thousand, two hundred seventy-nine".