997099 has 2 divisors, whose sum is σ = 997100. Its totient is φ = 997098.

The previous prime is 997097. The next prime is 997103. The reversal of 997099 is 990799.

It is a weak prime.

It is an emirp because it is prime and its reverse (990799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997099 - 2¹ = 997097 is a prime.

Together with 997097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (997091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498549 + 498550.

It is an arithmetic number, because the mean of its divisors is an integer number (498550).

2⁹⁹⁷⁰⁹⁹ is an apocalyptic number.

997099 is a deficient number, since it is larger than the sum of its proper divisors (1).

997099 is an equidigital number, since it uses as much as digits as its factorization.

997099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 997099 is about 998.5484464962. The cubic root of 997099 is about 99.9032063401.

The spelling of 997099 in words is "nine hundred ninety-seven thousand, ninety-nine".