1112457779 has 4 divisors (see below), whose sum is σ = 1113314160. Its totient is φ = 1111601400.

The previous prime is 1112457763. The next prime is 1112457791. The reversal of 1112457779 is 9777542111.

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 1112457779 - 2⁴ = 1112457763 is a prime.

It is a super-2 number, since 2×1112457779² = 2475124620115225682, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1112457739) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 426239 + ... + 428840.

It is an arithmetic number, because the mean of its divisors is an integer number (278328540).

Almost surely, 2^1112457779 is an apocalyptic number.

1112457779 is a deficient number, since it is larger than the sum of its proper divisors (856381).

1112457779 is an equidigital number, since it uses as much as digits as its factorization.

1112457779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856380.

The product of its digits is 123480, while the sum is 44.

The square root of 1112457779 is about 33353.5272347618. The cubic root of 1112457779 is about 1036.1624407386.

The spelling of 1112457779 in words is "one billion, one hundred twelve million, four hundred fifty-seven thousand, seven hundred seventy-nine".