861241473 has 18 divisors (see below), whose sum is σ = 1285452402. Its totient is φ = 555634080.

The previous prime is 861241439. The next prime is 861241541. The reversal of 861241473 is 374142168.

It can be written as a sum of positive squares in only one way, i.e., 825815169 + 35426304 = 28737^2 + 5952^2 .

It is not a de Polignac number, because 861241473 - 2¹³ = 861233281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (861241673) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 41140 + ... + 58437.

Almost surely, 2^861241473 is an apocalyptic number.

It is an amenable number.

861241473 is a deficient number, since it is larger than the sum of its proper divisors (424210929).

861241473 is a wasteful number, since it uses less digits than its factorization.

861241473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99645 (or 99611 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 861241473 is about 29346.9159026975. The cubic root of 861241473 is about 951.4259188748.

The spelling of 861241473 in words is "eight hundred sixty-one million, two hundred forty-one thousand, four hundred seventy-three".