8209400012 has 24 divisors (see below), whose sum is σ = 16096074960. Its totient is φ = 3630692160.

The previous prime is 8209399993. The next prime is 8209400021. The reversal of 8209400012 is 2100049028.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519687 + ... + 2522942.

It is an arithmetic number, because the mean of its divisors is an integer number (670669790).

Almost surely, 2^8209400012 is an apocalyptic number.

It is an amenable number.

8209400012 is a deficient number, since it is larger than the sum of its proper divisors (7886674948).

8209400012 is a wasteful number, since it uses less digits than its factorization.

8209400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042681 (or 5042679 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8209400012 is about 90605.7393987820. The cubic root of 8209400012 is about 2017.2999258126.

The spelling of 8209400012 in words is "eight billion, two hundred nine million, four hundred thousand, twelve".