398826206321 has 8 divisors (see below), whose sum is σ = 399098107584. Its totient is φ = 398554367760.

The previous prime is 398826206291. The next prime is 398826206329. The reversal of 398826206321 is 123602628893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398826206321 - 2⁶ = 398826206257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398826206321.

It is not an unprimeable number, because it can be changed into a prime (398826206329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26657375 + ... + 26672331.

It is an arithmetic number, because the mean of its divisors is an integer number (49887263448).

Almost surely, 2^398826206321 is an apocalyptic number.

It is an amenable number.

398826206321 is a deficient number, since it is larger than the sum of its proper divisors (271901263).

398826206321 is a wasteful number, since it uses less digits than its factorization.

398826206321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31351.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 398826206321 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, two hundred six thousand, three hundred twenty-one".