987899929 has 2 divisors, whose sum is σ = 987899930. Its totient is φ = 987899928.

The previous prime is 987899923. The next prime is 987899989. The reversal of 987899929 is 929998789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721459600 + 266440329 = 26860^2 + 16323^2 .

It is a cyclic number.

It is not a de Polignac number, because 987899929 - 2³ = 987899921 is a prime.

It is not a weakly prime, because it can be changed into another prime (987899921) 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, 493949964 + 493949965.

It is an arithmetic number, because the mean of its divisors is an integer number (493949965).

Almost surely, 2^987899929 is an apocalyptic number.

It is an amenable number.

987899929 is a deficient number, since it is larger than the sum of its proper divisors (1).

987899929 is an equidigital number, since it uses as much as digits as its factorization.

987899929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 70.

The square root of 987899929 is about 31430.8754093805. The cubic root of 987899929 is about 995.9502647837.

The spelling of 987899929 in words is "nine hundred eighty-seven million, eight hundred ninety-nine thousand, nine hundred twenty-nine".