1139800 has 48 divisors (see below), whose sum is σ = 2734200. Its totient is φ = 441600.

The previous prime is 1139779. The next prime is 1139807. The reversal of 1139800 is 89311.

1139800 = T₂₁₅ + T₂₁₆ + ... + T₂₅₅.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8131 + ... + 8269.

2^1139800 is an apocalyptic number.

1139800 is a gapful number since it is divisible by the number (10) 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 1139800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367100).

1139800 is an abundant number, since it is smaller than the sum of its proper divisors (1594400).

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

1139800 is a wasteful number, since it uses less digits than its factorization.

1139800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1139800 is about 1067.6141625138. The cubic root of 1139800 is about 104.4582832961.

The spelling of 1139800 in words is "one million, one hundred thirty-nine thousand, eight hundred".