398634867073 has 8 divisors (see below), whose sum is σ = 399031232040. Its totient is φ = 398238677760.

The previous prime is 398634867047. The next prime is 398634867079. The reversal of 398634867073 is 370768436893.

It can be written as a sum of positive squares in 4 ways, for example, as 4530905344 + 394103961729 = 67312^2 + 627777^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398634867073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398634866996 and 398634867014.

It is not an unprimeable number, because it can be changed into a prime (398634867079) 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 7 ways as a sum of consecutive naturals, for example, 4754511 + ... + 4837627.

It is an arithmetic number, because the mean of its divisors is an integer number (49878904005).

Almost surely, 2^398634867073 is an apocalyptic number.

It is an amenable number.

398634867073 is a deficient number, since it is larger than the sum of its proper divisors (396364967).

398634867073 is a wasteful number, since it uses less digits than its factorization.

398634867073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87827.

The product of its (nonzero) digits is 109734912, while the sum is 64.

The spelling of 398634867073 in words is "three hundred ninety-eight billion, six hundred thirty-four million, eight hundred sixty-seven thousand, seventy-three".