1199988 has 48 divisors (see below), whose sum is σ = 3198720. Its totient is φ = 388800.

The previous prime is 1199969. The next prime is 1199993. The reversal of 1199988 is 8899911.

It is a plaindrome in base 14.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4293 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (66640).

2^1199988 is an apocalyptic number.

1199988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599360).

1199988 is an abundant number, since it is smaller than the sum of its proper divisors (1998732).

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

1199988 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1199987) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (325).

1199988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 317 counting only the distinct ones).

The product of its digits is 46656, while the sum is 45.

The square root of 1199988 is about 1095.4396377711. The cubic root of 1199988 is about 106.2655026976.

It can be divided in two parts, 1199 and 988, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1199988 in words is "one million, one hundred ninety-nine thousand, nine hundred eighty-eight".