869803772 has 12 divisors (see below), whose sum is σ = 1522891776. Its totient is φ = 434691840.

The previous prime is 869803763. The next prime is 869803777. The reversal of 869803772 is 277308968.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 869803772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869803777) 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 3 ways as a sum of consecutive naturals, for example, 43004 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (126907648).

Almost surely, 2^869803772 is an apocalyptic number.

It is an amenable number.

869803772 is a deficient number, since it is larger than the sum of its proper divisors (653088004).

869803772 is a wasteful number, since it uses less digits than its factorization.

869803772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105028 (or 105026 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 869803772 is about 29492.4358437888. The cubic root of 869803772 is about 954.5684926844.

The spelling of 869803772 in words is "eight hundred sixty-nine million, eight hundred three thousand, seven hundred seventy-two".