1988879 has 8 divisors (see below), whose sum is σ = 2124672. Its totient is φ = 1857240.

The previous prime is 1988851. The next prime is 1988887. The reversal of 1988879 is 9788891.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1988879 - 2¹² = 1984783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988839) 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, 17 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (265584).

2^1988879 is an apocalyptic number.

1988879 is a deficient number, since it is larger than the sum of its proper divisors (135793).

1988879 is a wasteful number, since it uses less digits than its factorization.

1988879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077.

The product of its digits is 290304, while the sum is 50.

The square root of 1988879 is about 1410.2762140801. The cubic root of 1988879 is about 125.7581444397.

The spelling of 1988879 in words is "one million, nine hundred eighty-eight thousand, eight hundred seventy-nine".