111479999 has 16 divisors (see below), whose sum is σ = 122572800. Its totient is φ = 100932480.

The previous prime is 111479993. The next prime is 111480053. The reversal of 111479999 is 999974111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111479999 - 2⁸ = 111479743 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111479993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104342 + ... + 105404.

It is an arithmetic number, because the mean of its divisors is an integer number (7660800).

Almost surely, 2^111479999 is an apocalyptic number.

111479999 is a deficient number, since it is larger than the sum of its proper divisors (11092801).

111479999 is a wasteful number, since it uses less digits than its factorization.

111479999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310.

The product of its digits is 183708, while the sum is 50.

The square root of 111479999 is about 10558.4089236968. The cubic root of 111479999 is about 481.2812974754.

The spelling of 111479999 in words is "one hundred eleven million, four hundred seventy-nine thousand, nine hundred ninety-nine".