967981 has 4 divisors (see below), whose sum is σ = 1106272. Its totient is φ = 829692.

The previous prime is 967979. The next prime is 967999. The reversal of 967981 is 189769.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189769 = 109 ⋅1741.

It is a cyclic number.

It is not a de Polignac number, because 967981 - 2¹ = 967979 is a prime.

It is a super-2 number, since 2×967981² = 1873974432722, which contains 22 as substring.

It is a Duffinian number.

967981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (967931) 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, 69135 + ... + 69148.

It is an arithmetic number, because the mean of its divisors is an integer number (276568).

2⁹⁶⁷⁹⁸¹ is an apocalyptic number.

It is an amenable number.

967981 is a deficient number, since it is larger than the sum of its proper divisors (138291).

967981 is a wasteful number, since it uses less digits than its factorization.

967981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138290.

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

The square root of 967981 is about 983.8602543044. The cubic root of 967981 is about 98.9211016454.

The spelling of 967981 in words is "nine hundred sixty-seven thousand, nine hundred eighty-one".