1139249216 has 84 divisors (see below), whose sum is σ = 2656075968. Its totient is φ = 483372288.

The previous prime is 1139249207. The next prime is 1139249219. The reversal of 1139249216 is 6129429311.

It is a super-2 number, since 2×1139249216² = 2595777552313229312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1139249216.

It is not an unprimeable number, because it can be changed into a prime (1139249219) 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, 321245 + ... + 324771.

It is an arithmetic number, because the mean of its divisors is an integer number (31619952).

Almost surely, 2^1139249216 is an apocalyptic number.

1139249216 is a gapful number since it is divisible by the number (16) 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 1139249216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328037984).

1139249216 is an abundant number, since it is smaller than the sum of its proper divisors (1516826752).

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

1139249216 is a wasteful number, since it uses less digits than its factorization.

1139249216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656 (or 3639 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 1139249216 is about 33752.7660496144. The cubic root of 1139249216 is about 1044.4145484057.

The spelling of 1139249216 in words is "one billion, one hundred thirty-nine million, two hundred forty-nine thousand, two hundred sixteen".