987898729 has 2 divisors, whose sum is σ = 987898730. Its totient is φ = 987898728.

The previous prime is 987898663. The next prime is 987898733. The reversal of 987898729 is 927898789.

987898729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844018704 + 143880025 = 29052^2 + 11995^2 .

It is a cyclic number.

It is not a de Polignac number, because 987898729 - 2¹³ = 987890537 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (987898739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493949364 + 493949365.

It is an arithmetic number, because the mean of its divisors is an integer number (493949365).

Almost surely, 2^987898729 is an apocalyptic number.

It is an amenable number.

987898729 is a deficient number, since it is larger than the sum of its proper divisors (1).

987898729 is an equidigital number, since it uses as much as digits as its factorization.

987898729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 67.

The square root of 987898729 is about 31430.8563198650. The cubic root of 987898729 is about 995.9498615240.

The spelling of 987898729 in words is "nine hundred eighty-seven million, eight hundred ninety-eight thousand, seven hundred twenty-nine".