1989796 has 6 divisors (see below), whose sum is σ = 3482150. Its totient is φ = 994896.

The previous prime is 1989791. The next prime is 1989803. The reversal of 1989796 is 6979891.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 112896 = 1370^2 + 336^2 .

It is not an unprimeable number, because it can be changed into a prime (1989791) 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 as a sum of consecutive naturals, namely, 248721 + ... + 248728.

2^1989796 is an apocalyptic number.

It is an amenable number.

1989796 is a deficient number, since it is larger than the sum of its proper divisors (1492354).

1989796 is a wasteful number, since it uses less digits than its factorization.

1989796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497453 (or 497451 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The square root of 1989796 is about 1410.6012902305. The cubic root of 1989796 is about 125.7774689770. Note that the first 3 decimals are identical.

The spelling of 1989796 in words is "one million, nine hundred eighty-nine thousand, seven hundred ninety-six".