861443413 has 16 divisors (see below), whose sum is σ = 925696000. Its totient is φ = 799252272.

The previous prime is 861443399. The next prime is 861443417. The reversal of 861443413 is 314344168.

861443413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 861443413 - 2²⁵ = 827888981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861443417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188368 + ... + 192886.

It is an arithmetic number, because the mean of its divisors is an integer number (57856000).

Almost surely, 2^861443413 is an apocalyptic number.

It is an amenable number.

861443413 is a deficient number, since it is larger than the sum of its proper divisors (64252587).

861443413 is a wasteful number, since it uses less digits than its factorization.

861443413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744.

The product of its digits is 27648, while the sum is 34.

The square root of 861443413 is about 29350.3562670030. The cubic root of 861443413 is about 951.5002750770.

The spelling of 861443413 in words is "eight hundred sixty-one million, four hundred forty-three thousand, four hundred thirteen".