112961909 has 4 divisors (see below), whose sum is σ = 113083404. Its totient is φ = 112840416.

The previous prime is 112961887. The next prime is 112961911. The reversal of 112961909 is 909169211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60109009 + 52852900 = 7753^2 + 7270^2 .

It is a cyclic number.

It is not a de Polignac number, because 112961909 - 2¹⁶ = 112896373 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 (112961939) 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 3 ways as a sum of consecutive naturals, for example, 59342 + ... + 61215.

It is an arithmetic number, because the mean of its divisors is an integer number (28270851).

Almost surely, 2^112961909 is an apocalyptic number.

It is an amenable number.

112961909 is a deficient number, since it is larger than the sum of its proper divisors (121495).

112961909 is an equidigital number, since it uses as much as digits as its factorization.

112961909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121494.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 112961909 is about 10628.3540117932. The cubic root of 112961909 is about 483.4044838049.

The spelling of 112961909 in words is "one hundred twelve million, nine hundred sixty-one thousand, nine hundred nine".