861322293 has 24 divisors (see below), whose sum is σ = 1371001632. Its totient is φ = 517714848.

The previous prime is 861322279. The next prime is 861322303. The reversal of 861322293 is 392223168.

It is not a de Polignac number, because 861322293 - 2⁴ = 861322277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861322213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80571 + ... + 90632.

It is an arithmetic number, because the mean of its divisors is an integer number (57125068).

Almost surely, 2^861322293 is an apocalyptic number.

It is an amenable number.

861322293 is a deficient number, since it is larger than the sum of its proper divisors (509679339).

861322293 is a wasteful number, since it uses less digits than its factorization.

861322293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171265 (or 171262 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 861322293 is about 29348.2928464332. The cubic root of 861322293 is about 951.4556789518.

The spelling of 861322293 in words is "eight hundred sixty-one million, three hundred twenty-two thousand, two hundred ninety-three".