112978993 has 2 divisors, whose sum is σ = 112978994. Its totient is φ = 112978992.

The previous prime is 112978939. The next prime is 112979033. The reversal of 112978993 is 399879211.

Together with previous prime (112978939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105206049 + 7772944 = 10257^2 + 2788^2 .

It is an emirp because it is prime and its reverse (399879211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112978993 is a prime.

It is not a weakly prime, because it can be changed into another prime (112976993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56489496 + 56489497.

It is an arithmetic number, because the mean of its divisors is an integer number (56489497).

Almost surely, 2^112978993 is an apocalyptic number.

It is an amenable number.

112978993 is a deficient number, since it is larger than the sum of its proper divisors (1).

112978993 is an equidigital number, since it uses as much as digits as its factorization.

112978993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 49.

The square root of 112978993 is about 10629.1576806443. The cubic root of 112978993 is about 483.4288520956.

The spelling of 112978993 in words is "one hundred twelve million, nine hundred seventy-eight thousand, nine hundred ninety-three".