987994 has 8 divisors (see below), whose sum is σ = 1693728. Its totient is φ = 423420.

The previous prime is 987991. The next prime is 987997. The reversal of 987994 is 499789.

It is an interprime number because it is at equal distance from previous prime (987991) and next prime (987997).

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

It is a super-2 number, since 2×987994² = 1952264288072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (987991) by changing a digit.

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, 35272 + ... + 35299.

It is an arithmetic number, because the mean of its divisors is an integer number (211716).

2⁹⁸⁷⁹⁹⁴ is an apocalyptic number.

987994 is a deficient number, since it is larger than the sum of its proper divisors (705734).

987994 is a wasteful number, since it uses less digits than its factorization.

987994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70580.

The product of its digits is 163296, while the sum is 46.

The square root of 987994 is about 993.9788730149. The cubic root of 987994 is about 99.5981876307.

The spelling of 987994 in words is "nine hundred eighty-seven thousand, nine hundred ninety-four".