861422 has 8 divisors (see below), whose sum is σ = 1360200. Its totient is φ = 408024.

The previous prime is 861391. The next prime is 861433. The reversal of 861422 is 224168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11297 + ... + 11372.

It is an arithmetic number, because the mean of its divisors is an integer number (170025).

2⁸⁶¹⁴²² is an apocalyptic number.

861422 is a deficient number, since it is larger than the sum of its proper divisors (498778).

861422 is a wasteful number, since it uses less digits than its factorization.

861422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690.

The product of its digits is 768, while the sum is 23.

The square root of 861422 is about 928.1282239001. The cubic root of 861422 is about 95.1492391160.

The spelling of 861422 in words is "eight hundred sixty-one thousand, four hundred twenty-two".