987539 has 8 divisors (see below), whose sum is σ = 1145088. Its totient is φ = 834120.

The previous prime is 987533. The next prime is 987541. The reversal of 987539 is 935789.

987539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 987539 - 2⁴ = 987523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 987496 and 987505.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987539.

It is not an unprimeable number, because it can be changed into a prime (987533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (143136).

2⁹⁸⁷⁵³⁹ is an apocalyptic number.

987539 is a deficient number, since it is larger than the sum of its proper divisors (157549).

987539 is a wasteful number, since it uses less digits than its factorization.

987539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its digits is 68040, while the sum is 41.

The square root of 987539 is about 993.7499685535. The cubic root of 987539 is about 99.5828959947.

The spelling of 987539 in words is "nine hundred eighty-seven thousand, five hundred thirty-nine".