997711339 has 2 divisors, whose sum is σ = 997711340. Its totient is φ = 997711338.

The previous prime is 997711313. The next prime is 997711357. The reversal of 997711339 is 933117799.

It is a strong prime.

It is an emirp because it is prime and its reverse (933117799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997711339 - 2⁵ = 997711307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997711292 and 997711301.

It is not a weakly prime, because it can be changed into another prime (997711369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498855669 + 498855670.

It is an arithmetic number, because the mean of its divisors is an integer number (498855670).

Almost surely, 2^997711339 is an apocalyptic number.

997711339 is a deficient number, since it is larger than the sum of its proper divisors (1).

997711339 is an equidigital number, since it uses as much as digits as its factorization.

997711339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 321489, while the sum is 49.

The square root of 997711339 is about 31586.5689653055. The cubic root of 997711339 is about 999.2365302623.

It can be divided in two parts, 9977 and 11339, that added together give a square (21316 = 146²).

The spelling of 997711339 in words is "nine hundred ninety-seven million, seven hundred eleven thousand, three hundred thirty-nine".