869780862 has 16 divisors (see below), whose sum is σ = 1932846480. Its totient is φ = 289926936.

The previous prime is 869780837. The next prime is 869780881. The reversal of 869780862 is 268087968.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 16107053 = 869780862 / (8 + 6 + 9 + 7 + 8 + 0 + 8 + 6 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 869780799 and 869780808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8053473 + ... + 8053580.

It is an arithmetic number, because the mean of its divisors is an integer number (120802905).

Almost surely, 2^869780862 is an apocalyptic number.

869780862 is an abundant number, since it is smaller than the sum of its proper divisors (1063065618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869780862 is a wasteful number, since it uses less digits than its factorization.

869780862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16107064 (or 16107058 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 869780862 is about 29492.0474365548. The cubic root of 869780862 is about 954.5601117304.

The spelling of 869780862 in words is "eight hundred sixty-nine million, seven hundred eighty thousand, eight hundred sixty-two".