111994857 has 12 divisors (see below), whose sum is σ = 174214404. Its totient is φ = 68919840.

The previous prime is 111994801. The next prime is 111994871. The reversal of 111994857 is 758499111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30074256 + 81920601 = 5484^2 + 9051^2 .

It is not a de Polignac number, because 111994857 - 2¹² = 111990761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111994877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478494 + ... + 478727.

It is an arithmetic number, because the mean of its divisors is an integer number (14517867).

Almost surely, 2^111994857 is an apocalyptic number.

It is an amenable number.

111994857 is a deficient number, since it is larger than the sum of its proper divisors (62219547).

111994857 is a wasteful number, since it uses less digits than its factorization.

111994857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957240 (or 957237 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 111994857 is about 10582.7622575583. The cubic root of 111994857 is about 482.0210745306.

The spelling of 111994857 in words is "one hundred eleven million, nine hundred ninety-four thousand, eight hundred fifty-seven".