1179980 has 24 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 460160.

The previous prime is 1179979. The next prime is 1179989. The reversal of 1179980 is 899711.

It is a self number, because there is not a number n which added to its sum of digits gives 1179980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1179989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 1539.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2^1179980 is an apocalyptic number.

1179980 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 1179980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

1179980 is an abundant number, since it is smaller than the sum of its proper divisors (1360180).

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

1179980 is a wasteful number, since it uses less digits than its factorization.

1179980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1487 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1179980 is about 1086.2688433348. The cubic root of 1179980 is about 105.6715835045.

The spelling of 1179980 in words is "one million, one hundred seventy-nine thousand, nine hundred eighty".