869194799901 has 24 divisors (see below), whose sum is σ = 1269003040760. Its totient is φ = 573237927936.

The previous prime is 869194799857. The next prime is 869194799933. The reversal of 869194799901 is 109997491968.

869194799901 is a `hidden beast` number, since 8 + 69 + 1 + 9 + 479 + 9 + 90 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 231351380100 + 637843419801 = 480990^2 + 798651^2 .

It is not a de Polignac number, because 869194799901 - 2²² = 869190605597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 869194799901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869194799981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1784685 + ... + 2218893.

Almost surely, 2^869194799901 is an apocalyptic number.

It is an amenable number.

869194799901 is a deficient number, since it is larger than the sum of its proper divisors (399808240859).

869194799901 is a wasteful number, since it uses less digits than its factorization.

869194799901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436605 (or 436602 counting only the distinct ones).

The product of its (nonzero) digits is 79361856, while the sum is 72.

The spelling of 869194799901 in words is "eight hundred sixty-nine billion, one hundred ninety-four million, seven hundred ninety-nine thousand, nine hundred one".