113999987 has 2 divisors, whose sum is σ = 113999988. Its totient is φ = 113999986.

The previous prime is 113999969. The next prime is 113999993. The reversal of 113999987 is 789999311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113999987 - 2⁸ = 113999731 is a prime.

It is not a weakly prime, because it can be changed into another prime (113999917) 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 as a sum of consecutive naturals, namely, 56999993 + 56999994.

It is an arithmetic number, because the mean of its divisors is an integer number (56999994).

Almost surely, 2^113999987 is an apocalyptic number.

113999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

113999987 is an equidigital number, since it uses as much as digits as its factorization.

113999987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 56.

The square root of 113999987 is about 10677.0776432505. The cubic root of 113999987 is about 484.8807401528.

The spelling of 113999987 in words is "one hundred thirteen million, nine hundred ninety-nine thousand, nine hundred eighty-seven".