1979836 has 6 divisors (see below), whose sum is σ = 3464720. Its totient is φ = 989916.

The previous prime is 1979827. The next prime is 1979891. The reversal of 1979836 is 6389791.

It is a junction number, because it is equal to n+sod(n) for n = 1979792 and 1979801.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 247476 + ... + 247483.

2^1979836 is an apocalyptic number.

It is an amenable number.

1979836 is a deficient number, since it is larger than the sum of its proper divisors (1484884).

1979836 is a wasteful number, since it uses less digits than its factorization.

1979836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494963 (or 494961 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1979836 is about 1407.0664518778. The cubic root of 1979836 is about 125.5672565329.

The spelling of 1979836 in words is "one million, nine hundred seventy-nine thousand, eight hundred thirty-six".