1799988 has 24 divisors (see below), whose sum is σ = 4270560. Its totient is φ = 589920.

The previous prime is 1799983. The next prime is 1799999. The reversal of 1799988 is 8899971.

It is a self number, because there is not a number n which added to its sum of digits gives 1799988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1799983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (177940).

2^1799988 is an apocalyptic number.

It is an amenable number.

1799988 is an abundant number, since it is smaller than the sum of its proper divisors (2470572).

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

1799988 is a wasteful number, since it uses less digits than its factorization.

1799988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2525 counting only the distinct ones).

The product of its digits is 326592, while the sum is 51.

The square root of 1799988 is about 1341.6363143565. The cubic root of 1799988 is about 121.6437695908.

The spelling of 1799988 in words is "one million, seven hundred ninety-nine thousand, nine hundred eighty-eight".