869732137 has 2 divisors, whose sum is σ = 869732138. Its totient is φ = 869732136.

The previous prime is 869732111. The next prime is 869732177. The reversal of 869732137 is 731237968.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704583936 + 165148201 = 26544^2 + 12851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869732137 is a prime.

It is not a weakly prime, because it can be changed into another prime (869732107) 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, 434866068 + 434866069.

It is an arithmetic number, because the mean of its divisors is an integer number (434866069).

Almost surely, 2^869732137 is an apocalyptic number.

It is an amenable number.

869732137 is a deficient number, since it is larger than the sum of its proper divisors (1).

869732137 is an equidigital number, since it uses as much as digits as its factorization.

869732137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 869732137 is about 29491.2213548371. The cubic root of 869732137 is about 954.5422866237.

It can be divided in two parts, 8 and 69732137, that added together give a triangular number (69732145 = T₁₁₈₀₉).

The spelling of 869732137 in words is "eight hundred sixty-nine million, seven hundred thirty-two thousand, one hundred thirty-seven".