869009148 has 90 divisors (see below), whose sum is σ = 2600500056. Its totient is φ = 247887216.

The previous prime is 869009123. The next prime is 869009153. The reversal of 869009148 is 841900968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1403583 + ... + 1404201.

Almost surely, 2^869009148 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 869009148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300250028).

869009148 is an abundant number, since it is smaller than the sum of its proper divisors (1731490908).

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

869009148 is an equidigital number, since it uses as much as digits as its factorization.

869009148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 869009148 is about 29478.9611078817. The cubic root of 869009148 is about 954.2777167022.

The spelling of 869009148 in words is "eight hundred sixty-nine million, nine thousand, one hundred forty-eight".