1139049456 has 20 divisors (see below), whose sum is σ = 2942544552. Its totient is φ = 379683136.

The previous prime is 1139049451. The next prime is 1139049479. The reversal of 1139049456 is 6549409311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139049451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11865051 + ... + 11865146.

Almost surely, 2^1139049456 is an apocalyptic number.

1139049456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1139049456 is an abundant number, since it is smaller than the sum of its proper divisors (1803495096).

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

1139049456 is a wasteful number, since it uses less digits than its factorization.

1139049456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23730208 (or 23730202 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1139049456 is about 33749.8067550023. The cubic root of 1139049456 is about 1044.3535010532.

The spelling of 1139049456 in words is "one billion, one hundred thirty-nine million, forty-nine thousand, four hundred fifty-six".