1112991839 has 4 divisors (see below), whose sum is σ = 1115406600. Its totient is φ = 1110577080.

The previous prime is 1112991829. The next prime is 1112991877. The reversal of 1112991839 is 9381992111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112991839 - 2¹⁶ = 1112926303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112991839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112991829) 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, 1206689 + ... + 1207610.

It is an arithmetic number, because the mean of its divisors is an integer number (278851650).

Almost surely, 2^1112991839 is an apocalyptic number.

1112991839 is a deficient number, since it is larger than the sum of its proper divisors (2414761).

1112991839 is an equidigital number, since it uses as much as digits as its factorization.

1112991839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414760.

The product of its digits is 34992, while the sum is 44.

The square root of 1112991839 is about 33361.5323239206. The cubic root of 1112991839 is about 1036.3282251229.

The spelling of 1112991839 in words is "one billion, one hundred twelve million, nine hundred ninety-one thousand, eight hundred thirty-nine".