861448 has 16 divisors (see below), whose sum is σ = 1846080. Its totient is φ = 369168.

The previous prime is 861439. The next prime is 861491. The reversal of 861448 is 844168.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 7636 + ... + 7747.

It is an arithmetic number, because the mean of its divisors is an integer number (115380).

2⁸⁶¹⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

861448 is an abundant number, since it is smaller than the sum of its proper divisors (984632).

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

861448 is a wasteful number, since it uses less digits than its factorization.

861448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15396 (or 15392 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 861448 is about 928.1422304798. The cubic root of 861448 is about 95.1501963918.

The spelling of 861448 in words is "eight hundred sixty-one thousand, four hundred forty-eight".