8238209966 has 24 divisors (see below), whose sum is σ = 14999832720. Its totient is φ = 3377153472.

The previous prime is 8238209957. The next prime is 8238209983. The reversal of 8238209966 is 6699028328.

It is a happy number.

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, 1825211 + ... + 1829718.

It is an arithmetic number, because the mean of its divisors is an integer number (624993030).

Almost surely, 2^8238209966 is an apocalyptic number.

8238209966 is a deficient number, since it is larger than the sum of its proper divisors (6761622754).

8238209966 is a wasteful number, since it uses less digits than its factorization.

8238209966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654968 (or 3654961 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 8238209966 is about 90764.5854174413. The cubic root of 8238209966 is about 2019.6569987487.

The spelling of 8238209966 in words is "eight billion, two hundred thirty-eight million, two hundred nine thousand, nine hundred sixty-six".