396404822213 has 4 divisors (see below), whose sum is σ = 396496185120. Its totient is φ = 396313459308.

The previous prime is 396404822201. The next prime is 396404822227. The reversal of 396404822213 is 312228404693.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312228404693 = 109 ⋅2864480777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396404822213 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 (396404822273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45674945 + ... + 45683622.

It is an arithmetic number, because the mean of its divisors is an integer number (99124046280).

Almost surely, 2^396404822213 is an apocalyptic number.

It is an amenable number.

396404822213 is a deficient number, since it is larger than the sum of its proper divisors (91362907).

396404822213 is an equidigital number, since it uses as much as digits as its factorization.

396404822213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91362906.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 396404822213 in words is "three hundred ninety-six billion, four hundred four million, eight hundred twenty-two thousand, two hundred thirteen".