997299319 has 2 divisors, whose sum is σ = 997299320. Its totient is φ = 997299318.

The previous prime is 997299313. The next prime is 997299353. The reversal of 997299319 is 913992799.

It is a weak prime.

It is an emirp because it is prime and its reverse (913992799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997299319 - 2¹¹ = 997297271 is a prime.

It is a super-2 number, since 2×997299319² = 1989211863355727522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997299313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498649659 + 498649660.

It is an arithmetic number, because the mean of its divisors is an integer number (498649660).

Almost surely, 2^997299319 is an apocalyptic number.

997299319 is a deficient number, since it is larger than the sum of its proper divisors (1).

997299319 is an equidigital number, since it uses as much as digits as its factorization.

997299319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2480058, while the sum is 58.

The square root of 997299319 is about 31580.0462159257. The cubic root of 997299319 is about 999.0989613732.

The spelling of 997299319 in words is "nine hundred ninety-seven million, two hundred ninety-nine thousand, three hundred nineteen".