113991487 has 8 divisors (see below), whose sum is σ = 118170576. Its totient is φ = 109870272.

The previous prime is 113991463. The next prime is 113991491. The reversal of 113991487 is 784199311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113991487 - 2²³ = 105602879 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 (113991457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10438 + ... + 18355.

It is an arithmetic number, because the mean of its divisors is an integer number (14771322).

Almost surely, 2^113991487 is an apocalyptic number.

113991487 is a deficient number, since it is larger than the sum of its proper divisors (4179089).

113991487 is a wasteful number, since it uses less digits than its factorization.

113991487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28937.

The product of its digits is 54432, while the sum is 43.

The square root of 113991487 is about 10676.6795868378. The cubic root of 113991487 is about 484.8686887224.

The spelling of 113991487 in words is "one hundred thirteen million, nine hundred ninety-one thousand, four hundred eighty-seven".