869133961 has 4 divisors (see below), whose sum is σ = 869227024. Its totient is φ = 869040900.

The previous prime is 869133953. The next prime is 869133971. The reversal of 869133961 is 169331968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 869133961 - 2³ = 869133953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869133901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30735 + ... + 51796.

It is an arithmetic number, because the mean of its divisors is an integer number (217306756).

Almost surely, 2^869133961 is an apocalyptic number.

It is an amenable number.

869133961 is a deficient number, since it is larger than the sum of its proper divisors (93063).

869133961 is a wasteful number, since it uses less digits than its factorization.

869133961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93062.

The product of its digits is 209952, while the sum is 46.

The square root of 869133961 is about 29481.0780162463. The cubic root of 869133961 is about 954.3234011322.

The spelling of 869133961 in words is "eight hundred sixty-nine million, one hundred thirty-three thousand, nine hundred sixty-one".