997530929 has 2 divisors, whose sum is σ = 997530930. Its totient is φ = 997530928.

The previous prime is 997530923. The next prime is 997530931. The reversal of 997530929 is 929035799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995528704 + 2002225 = 31552^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 997530929 - 2⁸ = 997530673 is a prime.

Together with 997530931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997530923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498765464 + 498765465.

It is an arithmetic number, because the mean of its divisors is an integer number (498765465).

Almost surely, 2^997530929 is an apocalyptic number.

It is an amenable number.

997530929 is a deficient number, since it is larger than the sum of its proper divisors (1).

997530929 is an equidigital number, since it uses as much as digits as its factorization.

997530929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1377810, while the sum is 53.

The square root of 997530929 is about 31583.7130337774. The cubic root of 997530929 is about 999.1762980347.

It can be divided in two parts, 9975 and 30929, that added together give a palindrome (40904).

The spelling of 997530929 in words is "nine hundred ninety-seven million, five hundred thirty thousand, nine hundred twenty-nine".