987929 has 2 divisors, whose sum is σ = 987930. Its totient is φ = 987928.

The previous prime is 987913. The next prime is 987941. The reversal of 987929 is 929789.

987929 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., 883600 + 104329 = 940^2 + 323^2 .

It is a cyclic number.

It is not a de Polignac number, because 987929 - 2⁴ = 987913 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 987929.

It is not a weakly prime, because it can be changed into another prime (987979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493964 + 493965.

It is an arithmetic number, because the mean of its divisors is an integer number (493965).

2⁹⁸⁷⁹²⁹ is an apocalyptic number.

It is an amenable number.

987929 is a deficient number, since it is larger than the sum of its proper divisors (1).

987929 is an equidigital number, since it uses as much as digits as its factorization.

987929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 987929 is about 993.9461756051. The cubic root of 987929 is about 99.5960033987.

The spelling of 987929 in words is "nine hundred eighty-seven thousand, nine hundred twenty-nine".