865091469 has 32 divisors (see below), whose sum is σ = 1275595776. Its totient is φ = 517144320.

The previous prime is 865091459. The next prime is 865091483. The reversal of 865091469 is 964190568.

It is not a de Polignac number, because 865091469 - 2²⁸ = 596656013 is a prime.

It is a super-2 number, since 2×865091469² = 1496766499473155922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865091449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189584 + ... + 1190310.

It is an arithmetic number, because the mean of its divisors is an integer number (39862368).

Almost surely, 2^865091469 is an apocalyptic number.

It is an amenable number.

865091469 is a deficient number, since it is larger than the sum of its proper divisors (410504307).

865091469 is a wasteful number, since it uses less digits than its factorization.

865091469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 865091469 is about 29412.4373182503. The cubic root of 865091469 is about 952.8415270068.

Subtracting 865091469 from its reverse (964190568), we obtain a palindrome (99099099).

It can be divided in two parts, 86509 and 1469, that added together give a palindrome (87978).

The spelling of 865091469 in words is "eight hundred sixty-five million, ninety-one thousand, four hundred sixty-nine".