112991887 has 2 divisors, whose sum is σ = 112991888. Its totient is φ = 112991886.

The previous prime is 112991881. The next prime is 112991897. The reversal of 112991887 is 788199211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 112991887 - 2¹¹ = 112989839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112991881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56495943 + 56495944.

It is an arithmetic number, because the mean of its divisors is an integer number (56495944).

Almost surely, 2^112991887 is an apocalyptic number.

112991887 is a deficient number, since it is larger than the sum of its proper divisors (1).

112991887 is an equidigital number, since it uses as much as digits as its factorization.

112991887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 46.

The square root of 112991887 is about 10629.7642024647. The cubic root of 112991887 is about 483.4472422238.

The spelling of 112991887 in words is "one hundred twelve million, nine hundred ninety-one thousand, eight hundred eighty-seven".