867988 has 12 divisors (see below), whose sum is σ = 1657152. Its totient is φ = 394520.

The previous prime is 867959. The next prime is 867991. The reversal of 867988 is 889768.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9820 + ... + 9907.

It is an arithmetic number, because the mean of its divisors is an integer number (138096).

2⁸⁶⁷⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

867988 is a deficient number, since it is larger than the sum of its proper divisors (789164).

867988 is a wasteful number, since it uses less digits than its factorization.

867988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19742 (or 19740 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 867988 is about 931.6587358040. The cubic root of 867988 is about 95.3903788641.

The spelling of 867988 in words is "eight hundred sixty-seven thousand, nine hundred eighty-eight".