112409999 has 16 divisors (see below), whose sum is σ = 126706944. Its totient is φ = 99014400.

The previous prime is 112409963. The next prime is 112410013. The reversal of 112409999 is 999904211.

It is a cyclic number.

It is not a de Polignac number, because 112409999 - 2¹² = 112405903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112409939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27509 + ... + 31329.

It is an arithmetic number, because the mean of its divisors is an integer number (7919184).

Almost surely, 2^112409999 is an apocalyptic number.

112409999 is a deficient number, since it is larger than the sum of its proper divisors (14296945).

112409999 is a wasteful number, since it uses less digits than its factorization.

112409999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 112409999 is about 10602.3581810841. The cubic root of 112409999 is about 482.6159246100.

The spelling of 112409999 in words is "one hundred twelve million, four hundred nine thousand, nine hundred ninety-nine".