1111139406 has 48 divisors (see below), whose sum is σ = 2599047360. Its totient is φ = 341046720.

The previous prime is 1111139377. The next prime is 1111139423. The reversal of 1111139406 is 6049311111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111139406.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 92875 + ... + 104153.

It is an arithmetic number, because the mean of its divisors is an integer number (54146820).

Almost surely, 2^1111139406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111139406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299523680).

1111139406 is an abundant number, since it is smaller than the sum of its proper divisors (1487907954).

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

1111139406 is a wasteful number, since it uses less digits than its factorization.

1111139406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721 (or 11718 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1111139406 is about 33333.7577539647. The cubic root of 1111139406 is about 1035.7529604565.

The spelling of 1111139406 in words is "one billion, one hundred eleven million, one hundred thirty-nine thousand, four hundred six".