1396808398321 has 16 divisors (see below), whose sum is σ = 1710779606784. Its totient is φ = 1114257760704.

The previous prime is 1396808398319. The next prime is 1396808398421. The reversal of 1396808398321 is 1238938086931.

It is a cyclic number.

It is not a de Polignac number, because 1396808398321 - 2¹ = 1396808398319 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 1396808398321.

It is not an unprimeable number, because it can be changed into a prime (1396808398421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117234970 + ... + 117246883.

It is an arithmetic number, because the mean of its divisors is an integer number (106923725424).

Almost surely, 2^{1396808398321} is an apocalyptic number.

It is an amenable number.

1396808398321 is a deficient number, since it is larger than the sum of its proper divisors (313971208463).

1396808398321 is a wasteful number, since it uses less digits than its factorization.

1396808398321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234481920.

The product of its (nonzero) digits is 13436928, while the sum is 61.

The spelling of 1396808398321 in words is "one trillion, three hundred ninety-six billion, eight hundred eight million, three hundred ninety-eight thousand, three hundred twenty-one".