997084111 has 2 divisors, whose sum is σ = 997084112. Its totient is φ = 997084110.

The previous prime is 997084073. The next prime is 997084133. The reversal of 997084111 is 111480799.

It is a strong prime.

It is an emirp because it is prime and its reverse (111480799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997084111 - 2²¹ = 994986959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997084171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498542055 + 498542056.

It is an arithmetic number, because the mean of its divisors is an integer number (498542056).

Almost surely, 2^997084111 is an apocalyptic number.

997084111 is a deficient number, since it is larger than the sum of its proper divisors (1).

997084111 is an equidigital number, since it uses as much as digits as its factorization.

997084111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 997084111 is about 31576.6386906523. The cubic root of 997084111 is about 999.0270907546.

The spelling of 997084111 in words is "nine hundred ninety-seven million, eighty-four thousand, one hundred eleven".