8412638394409 has 4 divisors (see below), whose sum is σ = 8855408836240. Its totient is φ = 7969867952580.

The previous prime is 8412638394401. The next prime is 8412638394439. The reversal of 8412638394409 is 9044938362148.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8412638394409 - 2³ = 8412638394401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8412638394401) 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, 221385220887 + ... + 221385220924.

It is an arithmetic number, because the mean of its divisors is an integer number (2213852209060).

Almost surely, 2^{8412638394409} is an apocalyptic number.

It is an amenable number.

8412638394409 is a deficient number, since it is larger than the sum of its proper divisors (442770441831).

8412638394409 is a wasteful number, since it uses less digits than its factorization.

8412638394409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442770441830.

The product of its (nonzero) digits is 35831808, while the sum is 61.

The spelling of 8412638394409 in words is "eight trillion, four hundred twelve billion, six hundred thirty-eight million, three hundred ninety-four thousand, four hundred nine".