1989716 has 12 divisors (see below), whose sum is σ = 3541440. Its totient is φ = 977880.

The previous prime is 1989683. The next prime is 1989721. The reversal of 1989716 is 6179891.

It is a happy number.

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, 3980 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (295120).

2^1989716 is an apocalyptic number.

It is an amenable number.

1989716 is a deficient number, since it is larger than the sum of its proper divisors (1551724).

1989716 is a wasteful number, since it uses less digits than its factorization.

1989716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8494 (or 8492 counting only the distinct ones).

The product of its digits is 27216, while the sum is 41.

The square root of 1989716 is about 1410.5729332438. The cubic root of 1989716 is about 125.7757833214.

The spelling of 1989716 in words is "one million, nine hundred eighty-nine thousand, seven hundred sixteen".