8433416861 has 4 divisors (see below), whose sum is σ = 8434015452. Its totient is φ = 8432818272.

The previous prime is 8433416843. The next prime is 8433416863. The reversal of 8433416861 is 1686143348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5746549636 + 2686867225 = 75806^2 + 51835^2 .

It is a cyclic number.

It is not a de Polignac number, because 8433416861 - 2²⁶ = 8366307997 is a prime.

It is a super-2 number, since 2×8433416861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8433416863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277640 + ... + 306513.

It is an arithmetic number, because the mean of its divisors is an integer number (2108503863).

Almost surely, 2^8433416861 is an apocalyptic number.

It is an amenable number.

8433416861 is a deficient number, since it is larger than the sum of its proper divisors (598591).

8433416861 is a wasteful number, since it uses less digits than its factorization.

8433416861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598590.

The product of its digits is 331776, while the sum is 44.

The square root of 8433416861 is about 91833.6368712467. The cubic root of 8433416861 is about 2035.4847640681.

The spelling of 8433416861 in words is "eight billion, four hundred thirty-three million, four hundred sixteen thousand, eight hundred sixty-one".