861441822 has 24 divisors (see below), whose sum is σ = 1868346480. Its totient is φ = 286856640.

The previous prime is 861441787. The next prime is 861441853. The reversal of 861441822 is 228144168.

861441822 is a `hidden beast` number, since 8 + 614 + 4 + 18 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5554 + ... + 41877.

It is an arithmetic number, because the mean of its divisors is an integer number (77847770).

Almost surely, 2^861441822 is an apocalyptic number.

861441822 is an abundant number, since it is smaller than the sum of its proper divisors (1006904658).

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

861441822 is a wasteful number, since it uses less digits than its factorization.

861441822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48448 (or 48445 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 861441822 is about 29350.3291634012. The cubic root of 861441822 is about 951.4996893013.

The spelling of 861441822 in words is "eight hundred sixty-one million, four hundred forty-one thousand, eight hundred twenty-two".