986971 has 4 divisors (see below), whose sum is σ = 1000944. Its totient is φ = 973000.

The previous prime is 986963. The next prime is 986981. The reversal of 986971 is 179689.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 986971 - 2³ = 986963 is a prime.

It is a super-2 number, since 2×986971² = 1948223509682, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

986971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (986941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6880 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (250236).

2⁹⁸⁶⁹⁷¹ is an apocalyptic number.

986971 is a deficient number, since it is larger than the sum of its proper divisors (13973).

986971 is a wasteful number, since it uses less digits than its factorization.

986971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13972.

The product of its digits is 27216, while the sum is 40.

The square root of 986971 is about 993.4641412754. The cubic root of 986971 is about 99.5638000627.

The spelling of 986971 in words is "nine hundred eighty-six thousand, nine hundred seventy-one".