111447893 has 2 divisors, whose sum is σ = 111447894. Its totient is φ = 111447892.

The previous prime is 111447839. The next prime is 111447913. The reversal of 111447893 is 398744111.

Together with previous prime (111447839) 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., 59938564 + 51509329 = 7742^2 + 7177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111447893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111447803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55723946 + 55723947.

It is an arithmetic number, because the mean of its divisors is an integer number (55723947).

Almost surely, 2^111447893 is an apocalyptic number.

It is an amenable number.

111447893 is a deficient number, since it is larger than the sum of its proper divisors (1).

111447893 is an equidigital number, since it uses as much as digits as its factorization.

111447893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 111447893 is about 10556.8884146798. Note that the first 3 decimals coincide. The cubic root of 111447893 is about 481.2350903797.

The spelling of 111447893 in words is "one hundred eleven million, four hundred forty-seven thousand, eight hundred ninety-three".