1979992 has 24 divisors (see below), whose sum is σ = 4319460. Its totient is φ = 848400.

The previous prime is 1979947. The next prime is 1979993. The reversal of 1979992 is 2999791.

1979992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979993) 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 5 ways as a sum of consecutive naturals, for example, 2134 + ... + 2917.

2^1979992 is an apocalyptic number.

It is an amenable number.

1979992 is an abundant number, since it is smaller than the sum of its proper divisors (2339468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979992 is a wasteful number, since it uses less digits than its factorization.

1979992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071 (or 5060 counting only the distinct ones).

The product of its digits is 91854, while the sum is 46.

The square root of 1979992 is about 1407.1218852679. The cubic root of 1979992 is about 125.5705544453.

It can be divided in two parts, 19799 and 92, that added together give a palindrome (19891).

The spelling of 1979992 in words is "one million, nine hundred seventy-nine thousand, nine hundred ninety-two".