869619137 has 6 divisors (see below), whose sum is σ = 880229682. Its totient is φ = 859134992.

The previous prime is 869619083. The next prime is 869619169. The reversal of 869619137 is 731916968.

It can be written as a sum of positive squares in only one way, i.e., 718722481 + 150896656 = 26809^2 + 12284^2 .

It is a de Polignac number, because none of the positive numbers 2^k-869619137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869619337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56228 + ... + 70005.

It is an arithmetic number, because the mean of its divisors is an integer number (146704947).

Almost surely, 2^869619137 is an apocalyptic number.

It is an amenable number.

869619137 is a deficient number, since it is larger than the sum of its proper divisors (10610545).

869619137 is an equidigital number, since it uses as much as digits as its factorization.

869619137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126399 (or 126316 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 869619137 is about 29489.3054682541. The cubic root of 869619137 is about 954.5009451786.

The spelling of 869619137 in words is "eight hundred sixty-nine million, six hundred nineteen thousand, one hundred thirty-seven".