113778997 has 2 divisors, whose sum is σ = 113778998. Its totient is φ = 113778996.

The previous prime is 113778979. The next prime is 113779013. The reversal of 113778997 is 799877311.

Together with previous prime (113778979) 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., 109641841 + 4137156 = 10471^2 + 2034^2 .

It is a cyclic number.

It is not a de Polignac number, because 113778997 - 2¹⁵ = 113746229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113778967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56889498 + 56889499.

It is an arithmetic number, because the mean of its divisors is an integer number (56889499).

Almost surely, 2^113778997 is an apocalyptic number.

It is an amenable number.

113778997 is a deficient number, since it is larger than the sum of its proper divisors (1).

113778997 is an equidigital number, since it uses as much as digits as its factorization.

113778997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 52.

The square root of 113778997 is about 10666.7238175552. The cubic root of 113778997 is about 484.5672222546.

The spelling of 113778997 in words is "one hundred thirteen million, seven hundred seventy-eight thousand, nine hundred ninety-seven".