997895129269 has 2 divisors, whose sum is σ = 997895129270. Its totient is φ = 997895129268.

The previous prime is 997895129249. The next prime is 997895129293. The reversal of 997895129269 is 962921598799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779268748644 + 218626380625 = 882762^2 + 467575^2 .

It is a cyclic number.

It is not a de Polignac number, because 997895129269 - 2³⁷ = 860456175797 is a prime.

It is a super-2 number, since 2×997895129269² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 997895129195 and 997895129204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997895129249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498947564634 + 498947564635.

It is an arithmetic number, because the mean of its divisors is an integer number (498947564635).

Almost surely, 2^997895129269 is an apocalyptic number.

It is an amenable number.

997895129269 is a deficient number, since it is larger than the sum of its proper divisors (1).

997895129269 is an equidigital number, since it uses as much as digits as its factorization.

997895129269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396809280, while the sum is 76.

The spelling of 997895129269 in words is "nine hundred ninety-seven billion, eight hundred ninety-five million, one hundred twenty-nine thousand, two hundred sixty-nine".