988859 has 2 divisors, whose sum is σ = 988860. Its totient is φ = 988858.

The previous prime is 988849. The next prime is 988861. The reversal of 988859 is 958889.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988859 is a prime.

It is a Sophie Germain prime.

Together with 988861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (988829) 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, 494429 + 494430.

It is an arithmetic number, because the mean of its divisors is an integer number (494430).

2⁹⁸⁸⁸⁵⁹ is an apocalyptic number.

988859 is a deficient number, since it is larger than the sum of its proper divisors (1).

988859 is an equidigital number, since it uses as much as digits as its factorization.

988859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 47.

The square root of 988859 is about 994.4138977307. The cubic root of 988859 is about 99.6272456013.

The spelling of 988859 in words is "nine hundred eighty-eight thousand, eight hundred fifty-nine".