111892397 has 2 divisors, whose sum is σ = 111892398. Its totient is φ = 111892396.

The previous prime is 111892393. The next prime is 111892399. The reversal of 111892397 is 793298111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66275881 + 45616516 = 8141^2 + 6754^2 .

It is a cyclic number.

It is not a de Polignac number, because 111892397 - 2² = 111892393 is a prime.

Together with 111892399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111892393) 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 as a sum of consecutive naturals, namely, 55946198 + 55946199.

It is an arithmetic number, because the mean of its divisors is an integer number (55946199).

Almost surely, 2^111892397 is an apocalyptic number.

It is an amenable number.

111892397 is a deficient number, since it is larger than the sum of its proper divisors (1).

111892397 is an equidigital number, since it uses as much as digits as its factorization.

111892397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 41.

The square root of 111892397 is about 10577.9202587276. The cubic root of 111892397 is about 481.8740351953.

The spelling of 111892397 in words is "one hundred eleven million, eight hundred ninety-two thousand, three hundred ninety-seven".