869787969 has 8 divisors (see below), whose sum is σ = 1184392320. Its totient is φ = 567521136.

The previous prime is 869787953. The next prime is 869787977. The reversal of 869787969 is 969787968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 869787969 - 2⁴ = 869787953 is a prime.

It is a super-2 number, since 2×869787969² = 1513062222034289922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (869787869) 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 in 7 ways as a sum of consecutive naturals, for example, 3084214 + ... + 3084495.

It is an arithmetic number, because the mean of its divisors is an integer number (148049040).

Almost surely, 2^869787969 is an apocalyptic number.

It is an amenable number.

869787969 is a deficient number, since it is larger than the sum of its proper divisors (314604351).

869787969 is a wasteful number, since it uses less digits than its factorization.

869787969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6168759.

The product of its digits is 82301184, while the sum is 69.

The square root of 869787969 is about 29492.1679264173. The cubic root of 869787969 is about 954.5627116344.

Subtracting 869787969 from its reverse (969787968), we obtain a palindrome (99999999).

The spelling of 869787969 in words is "eight hundred sixty-nine million, seven hundred eighty-seven thousand, nine hundred sixty-nine".