1139506992 has 120 divisors (see below), whose sum is σ = 3462111744. Its totient is φ = 347784192.

The previous prime is 1139506939. The next prime is 1139506993. The reversal of 1139506992 is 2996059311.

It is a happy number.

1139506992 is a `hidden beast` number, since 1 + 139 + 506 + 9 + 9 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1139506993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235348 + ... + 240140.

Almost surely, 2^1139506992 is an apocalyptic number.

1139506992 is a gapful number since it is divisible by the number (12) 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 1139506992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731055872).

1139506992 is an abundant number, since it is smaller than the sum of its proper divisors (2322604752).

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

1139506992 is a wasteful number, since it uses less digits than its factorization.

1139506992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 1139506992 is about 33756.5844243756. The cubic root of 1139506992 is about 1044.4933151051.

The spelling of 1139506992 in words is "one billion, one hundred thirty-nine million, five hundred six thousand, nine hundred ninety-two".