9997739 has 2 divisors, whose sum is σ = 9997740. Its totient is φ = 9997738.

The previous prime is 9997711. The next prime is 9997747. The reversal of 9997739 is 9377999.

9997739 is nontrivially palindromic in base 6.

9997739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9997739 - 2⁸ = 9997483 is a prime.

It is a super-2 number, since 2×9997739² = 199909570224242, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9994739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998869 + 4998870.

It is an arithmetic number, because the mean of its divisors is an integer number (4998870).

Almost surely, 2^9997739 is an apocalyptic number.

9997739 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997739 is an equidigital number, since it uses as much as digits as its factorization.

9997739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 964467, while the sum is 53.

The square root of 9997739 is about 3161.9201444692. The cubic root of 9997739 is about 215.4272305232.

The spelling of 9997739 in words is "nine million, nine hundred ninety-seven thousand, seven hundred thirty-nine".