869273856 has 360 divisors, whose sum is σ = 2932273344. Its totient is φ = 253808640.

The previous prime is 869273843. The next prime is 869273887. The reversal of 869273856 is 658372968.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8439501 + ... + 8439603.

Almost surely, 2^869273856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869273856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466136672).

869273856 is an abundant number, since it is smaller than the sum of its proper divisors (2062999488).

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

869273856 is a wasteful number, since it uses less digits than its factorization.

869273856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 156 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 869273856 is about 29483.4505443308. The cubic root of 869273856 is about 954.3746007232.

The spelling of 869273856 in words is "eight hundred sixty-nine million, two hundred seventy-three thousand, eight hundred fifty-six".