1139396800 has 84 divisors (see below), whose sum is σ = 2869002136. Its totient is φ = 445132800.

The previous prime is 1139396777. The next prime is 1139396801. The reversal of 1139396800 is 86939311.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1139396801) 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 11 ways as a sum of consecutive naturals, for example, 60520 + ... + 77080.

Almost surely, 2^1139396800 is an apocalyptic number.

1139396800 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 1139396800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434501068).

1139396800 is an abundant number, since it is smaller than the sum of its proper divisors (1729605336).

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

1139396800 is a wasteful number, since it uses less digits than its factorization.

1139396800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16626 (or 16611 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1139396800 is about 33754.9522292656. The cubic root of 1139396800 is about 1044.4596460071.

The spelling of 1139396800 in words is "one billion, one hundred thirty-nine million, three hundred ninety-six thousand, eight hundred".