997739833 has 2 divisors, whose sum is σ = 997739834. Its totient is φ = 997739832.

The previous prime is 997739801. The next prime is 997739921. The reversal of 997739833 is 338937799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590830249 + 406909584 = 24307^2 + 20172^2 .

It is a cyclic number.

It is not a de Polignac number, because 997739833 - 2⁵ = 997739801 is a prime.

It is not a weakly prime, because it can be changed into another prime (997739033) 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, 498869916 + 498869917.

It is an arithmetic number, because the mean of its divisors is an integer number (498869917).

Almost surely, 2^997739833 is an apocalyptic number.

It is an amenable number.

997739833 is a deficient number, since it is larger than the sum of its proper divisors (1).

997739833 is an equidigital number, since it uses as much as digits as its factorization.

997739833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 58.

The square root of 997739833 is about 31587.0200082249. The cubic root of 997739833 is about 999.2460426912.

The spelling of 997739833 in words is "nine hundred ninety-seven million, seven hundred thirty-nine thousand, eight hundred thirty-three".