869413805 has 8 divisors (see below), whose sum is σ = 1123550232. Its totient is φ = 642028608.

The previous prime is 869413789. The next prime is 869413807. The reversal of 869413805 is 508314968.

It can be written as a sum of positive squares in 4 ways, for example, as 171767236 + 697646569 = 13106^2 + 26413^2 .

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

It is not a de Polignac number, because 869413805 - 2⁴ = 869413789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869413807) 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, 6687734 + ... + 6687863.

It is an arithmetic number, because the mean of its divisors is an integer number (140443779).

Almost surely, 2^869413805 is an apocalyptic number.

It is an amenable number.

869413805 is a deficient number, since it is larger than the sum of its proper divisors (254136427).

869413805 is a wasteful number, since it uses less digits than its factorization.

869413805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375615.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 869413805 is about 29485.8237972080. The cubic root of 869413805 is about 954.4258145813.

The spelling of 869413805 in words is "eight hundred sixty-nine million, four hundred thirteen thousand, eight hundred five".