398668929866893 has 16 divisors (see below), whose sum is σ = 456772271424640. Its totient is φ = 340853258851776.

The previous prime is 398668929866873. The next prime is 398668929866897.

398668929866893 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 398668929866893 - 2²⁹ = 398668392995981 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 (398668929866897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537652243 + ... + 538393231.

It is an arithmetic number, because the mean of its divisors is an integer number (28548266964040).

Almost surely, 2^{398668929866893} is an apocalyptic number.

It is an amenable number.

398668929866893 is a deficient number, since it is larger than the sum of its proper divisors (58103341557747).

398668929866893 is a wasteful number, since it uses less digits than its factorization.

398668929866893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934996.

The product of its digits is 626913312768, while the sum is 100.

The spelling of 398668929866893 in words is "three hundred ninety-eight trillion, six hundred sixty-eight billion, nine hundred twenty-nine million, eight hundred sixty-six thousand, eight hundred ninety-three".