1979000 has 32 divisors (see below), whose sum is σ = 4633200. Its totient is φ = 791200.

The previous prime is 1978997. The next prime is 1979039. The reversal of 1979000 is 9791.

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 7 ways as a sum of consecutive naturals, for example, 11 + ... + 1989.

2^1979000 is an apocalyptic number.

1979000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2316600).

1979000 is an abundant number, since it is smaller than the sum of its proper divisors (2654200).

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

1979000 is a wasteful number, since it uses less digits than its factorization.

1979000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 1979000 is about 1406.7693485430. The cubic root of 1979000 is about 125.5495801520.

The spelling of 1979000 in words is "one million, nine hundred seventy-nine thousand".