9871964 has 12 divisors (see below), whose sum is σ = 17412864. Its totient is φ = 4896864.

The previous prime is 9871957. The next prime is 9871973. The reversal of 9871964 is 4691789.

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, 9209 + ... + 10224.

It is an arithmetic number, because the mean of its divisors is an integer number (1451072).

Almost surely, 2^9871964 is an apocalyptic number.

It is an amenable number.

9871964 is a deficient number, since it is larger than the sum of its proper divisors (7540900).

9871964 is a wasteful number, since it uses less digits than its factorization.

9871964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19564 (or 19562 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 9871964 is about 3141.9681729769. The cubic root of 9871964 is about 214.5200326141.

The spelling of 9871964 in words is "nine million, eight hundred seventy-one thousand, nine hundred sixty-four".