112912399 has 4 divisors (see below), whose sum is σ = 116805960. Its totient is φ = 109018840.

The previous prime is 112912391. The next prime is 112912417. The reversal of 112912399 is 993219211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993219211 = 601 ⋅1652611.

It is a cyclic number.

It is not a de Polignac number, because 112912399 - 2³ = 112912391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112912391) 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, 1946737 + ... + 1946794.

It is an arithmetic number, because the mean of its divisors is an integer number (29201490).

Almost surely, 2^112912399 is an apocalyptic number.

112912399 is a deficient number, since it is larger than the sum of its proper divisors (3893561).

112912399 is an equidigital number, since it uses as much as digits as its factorization.

112912399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893560.

The product of its digits is 8748, while the sum is 37.

The square root of 112912399 is about 10626.0246094200. The cubic root of 112912399 is about 483.3338498079. Note that the first 3 decimals are identical.

It can be divided in two parts, 112912 and 399, that added together give a palindrome (113311).

The spelling of 112912399 in words is "one hundred twelve million, nine hundred twelve thousand, three hundred ninety-nine".