869532997 has 2 divisors, whose sum is σ = 869532998. Its totient is φ = 869532996.

The previous prime is 869532977. The next prime is 869533019. The reversal of 869532997 is 799235968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542610436 + 326922561 = 23294^2 + 18081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869532997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869532977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434766498 + 434766499.

It is an arithmetic number, because the mean of its divisors is an integer number (434766499).

Almost surely, 2^869532997 is an apocalyptic number.

It is an amenable number.

869532997 is a deficient number, since it is larger than the sum of its proper divisors (1).

869532997 is an equidigital number, since it uses as much as digits as its factorization.

869532997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The square root of 869532997 is about 29487.8449026035. The cubic root of 869532997 is about 954.4694281528.

The spelling of 869532997 in words is "eight hundred sixty-nine million, five hundred thirty-two thousand, nine hundred ninety-seven".