869552244 has 144 divisors (see below), whose sum is σ = 2608272576. Its totient is φ = 241228800.

The previous prime is 869552221. The next prime is 869552249. The reversal of 869552244 is 442255968.

869552244 is a `hidden beast` number, since 86 + 9 + 5 + 522 + 44 = 666.

It is a super-2 number, since 2×869552244² = 1512242210090871072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 869552244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869552249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247339 + ... + 250829.

It is an arithmetic number, because the mean of its divisors is an integer number (18113004).

Almost surely, 2^869552244 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 869552244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304136288).

869552244 is an abundant number, since it is smaller than the sum of its proper divisors (1738720332).

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

869552244 is a wasteful number, since it uses less digits than its factorization.

869552244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566 (or 3561 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 869552244 is about 29488.1712556069. The cubic root of 869552244 is about 954.4764704532.

The spelling of 869552244 in words is "eight hundred sixty-nine million, five hundred fifty-two thousand, two hundred forty-four".