111872479 has 4 divisors (see below), whose sum is σ = 111928320. Its totient is φ = 111816640.

The previous prime is 111872473. The next prime is 111872491. The reversal of 111872479 is 974278111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111872479 - 2³ = 111872471 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111872471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24799 + ... + 28960.

It is an arithmetic number, because the mean of its divisors is an integer number (27982080).

Almost surely, 2^111872479 is an apocalyptic number.

111872479 is a deficient number, since it is larger than the sum of its proper divisors (55841).

111872479 is an equidigital number, since it uses as much as digits as its factorization.

111872479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55840.

The product of its digits is 28224, while the sum is 40.

The square root of 111872479 is about 10576.9787274060. The cubic root of 111872479 is about 481.8454406501.

The spelling of 111872479 in words is "one hundred eleven million, eight hundred seventy-two thousand, four hundred seventy-nine".