987239 has 12 divisors (see below), whose sum is σ = 1117200. Its totient is φ = 871200.

The previous prime is 987227. The next prime is 987251. The reversal of 987239 is 932789.

987239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (987227) and next prime (987251).

It is not a de Polignac number, because 987239 - 2⁸ = 986983 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

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 987239.

It is not an unprimeable number, because it can be changed into a prime (987209) 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, 4862 + ... + 5060.

It is an arithmetic number, because the mean of its divisors is an integer number (93100).

2⁹⁸⁷²³⁹ is an apocalyptic number.

987239 is a deficient number, since it is larger than the sum of its proper divisors (129961).

987239 is a wasteful number, since it uses less digits than its factorization.

987239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 251 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 987239 is about 993.5990136871. The cubic root of 987239 is about 99.5728110277.

It can be divided in two parts, 98 and 7239, that added together give a palindrome (7337).

The spelling of 987239 in words is "nine hundred eighty-seven thousand, two hundred thirty-nine".