112928009 has 4 divisors (see below), whose sum is σ = 116570880. Its totient is φ = 109285140.

The previous prime is 112928003. The next prime is 112928017. The reversal of 112928009 is 900829211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900829211 = 251 ⋅3588961.

It is a cyclic number.

It is not a de Polignac number, because 112928009 - 2⁴ = 112927993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112928003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1821389 + ... + 1821450.

It is an arithmetic number, because the mean of its divisors is an integer number (29142720).

Almost surely, 2^112928009 is an apocalyptic number.

It is an amenable number.

112928009 is a deficient number, since it is larger than the sum of its proper divisors (3642871).

112928009 is an equidigital number, since it uses as much as digits as its factorization.

112928009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642870.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 112928009 is about 10626.7591014382. The cubic root of 112928009 is about 483.3561222179.

The spelling of 112928009 in words is "one hundred twelve million, nine hundred twenty-eight thousand, nine".