987939 has 12 divisors (see below), whose sum is σ = 1473472. Its totient is φ = 637200.

The previous prime is 987929. The next prime is 987941. The reversal of 987939 is 939789.

It is a happy number.

987939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 987939 - 2¹³ = 979747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 987894 and 987903.

It is not an unprimeable number, because it can be changed into a prime (987929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1492 + ... + 2049.

2⁹⁸⁷⁹³⁹ is an apocalyptic number.

987939 is a deficient number, since it is larger than the sum of its proper divisors (485533).

987939 is a wasteful number, since it uses less digits than its factorization.

987939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578 (or 3575 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 987939 is about 993.9512060459. The cubic root of 987939 is about 99.5963394406.

The spelling of 987939 in words is "nine hundred eighty-seven thousand, nine hundred thirty-nine".