1329988 has 24 divisors (see below), whose sum is σ = 2568384. Its totient is φ = 597600.

The previous prime is 1329971. The next prime is 1330001. The reversal of 1329988 is 8899231.

It is a self number, because there is not a number n which added to its sum of digits gives 1329988.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7258 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (107016).

2^1329988 is an apocalyptic number.

It is an amenable number.

1329988 is a deficient number, since it is larger than the sum of its proper divisors (1238396).

1329988 is a wasteful number, since it uses less digits than its factorization.

1329988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 1329988 is about 1153.2510567955. The cubic root of 1329988 is about 109.9721141434.

The spelling of 1329988 in words is "one million, three hundred twenty-nine thousand, nine hundred eighty-eight".