1139996466 has 144 divisors (see below), whose sum is σ = 3078410400. Its totient is φ = 303077376.

The previous prime is 1139996443. The next prime is 1139996479. The reversal of 1139996466 is 6646999311.

1139996466 is a `hidden beast` number, since 1 + 1 + 3 + 99 + 96 + 466 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 988146 + ... + 989298.

It is an arithmetic number, because the mean of its divisors is an integer number (21377850).

Almost surely, 2^1139996466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139996466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1539205200).

1139996466 is an abundant number, since it is smaller than the sum of its proper divisors (1938413934).

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

1139996466 is a wasteful number, since it uses less digits than its factorization.

1139996466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1243 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 1139996466 is about 33763.8336982044. The cubic root of 1139996466 is about 1044.6428473558.

The spelling of 1139996466 in words is "one billion, one hundred thirty-nine million, nine hundred ninety-six thousand, four hundred sixty-six".