869456 has 30 divisors (see below), whose sum is σ = 1961370. Its totient is φ = 372288.

The previous prime is 869443. The next prime is 869461. The reversal of 869456 is 654968.

It can be written as a sum of positive squares in only one way, i.e., 490000 + 379456 = 700^2 + 616^2 .

It is a congruent number.

It is an unprimeable number.

869456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (65379).

2⁸⁶⁹⁴⁵⁶ 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 869456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980685).

869456 is an abundant number, since it is smaller than the sum of its proper divisors (1091914).

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

869456 is a wasteful number, since it uses less digits than its factorization.

869456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1118 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 869456 is about 932.4462450994. The cubic root of 869456 is about 95.4441254619. Note that the first 3 decimals are identical.

The spelling of 869456 in words is "eight hundred sixty-nine thousand, four hundred fifty-six".