997353199 has 2 divisors, whose sum is σ = 997353200. Its totient is φ = 997353198.

The previous prime is 997353179. The next prime is 997353211. The reversal of 997353199 is 991353799.

It is a strong prime.

It is an emirp because it is prime and its reverse (991353799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997353199 - 2¹³ = 997345007 is a prime.

It is a super-3 number, since 3×997353199³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997353179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498676599 + 498676600.

It is an arithmetic number, because the mean of its divisors is an integer number (498676600).

Almost surely, 2^997353199 is an apocalyptic number.

997353199 is a deficient number, since it is larger than the sum of its proper divisors (1).

997353199 is an equidigital number, since it uses as much as digits as its factorization.

997353199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2066715, while the sum is 55.

The square root of 997353199 is about 31580.8992747198. The cubic root of 997353199 is about 999.1169534583.

The spelling of 997353199 in words is "nine hundred ninety-seven million, three hundred fifty-three thousand, one hundred ninety-nine".