1319988 has 24 divisors (see below), whose sum is σ = 3098592. Its totient is φ = 437344.

The previous prime is 1319963. The next prime is 1320019. The reversal of 1319988 is 8899131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3631 + ... + 3977.

It is an arithmetic number, because the mean of its divisors is an integer number (129108).

2^1319988 is an apocalyptic number.

It is an amenable number.

1319988 is an abundant number, since it is smaller than the sum of its proper divisors (1778604).

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

1319988 is a wasteful number, since it uses less digits than its factorization.

1319988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 1319988 is about 1148.9073069661. The cubic root of 1319988 is about 109.6957986351.

The spelling of 1319988 in words is "one million, three hundred nineteen thousand, nine hundred eighty-eight".