1988799 has 8 divisors (see below), whose sum is σ = 2658432. Its totient is φ = 1322520.

The previous prime is 1988797. The next prime is 1988801. The reversal of 1988799 is 9978891.

It is an interprime number because it is at equal distance from previous prime (1988797) and next prime (1988801).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1988799 - 2¹ = 1988797 is a prime.

1988799 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988797) 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, 1414 + ... + 2444.

It is an arithmetic number, because the mean of its divisors is an integer number (332304).

2^1988799 is an apocalyptic number.

1988799 is a deficient number, since it is larger than the sum of its proper divisors (669633).

1988799 is a wasteful number, since it uses less digits than its factorization.

1988799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

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

The square root of 1988799 is about 1410.2478505568. The cubic root of 1988799 is about 125.7564582660.

The spelling of 1988799 in words is "one million, nine hundred eighty-eight thousand, seven hundred ninety-nine".