398654325189121 has 4 divisors (see below), whose sum is σ = 404269174839744. Its totient is φ = 393039475538500.

The previous prime is 398654325189103. The next prime is 398654325189149. The reversal of 398654325189121 is 121981523456893.

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.

It is a cyclic number.

It is not a de Polignac number, because 398654325189121 - 2⁴⁷ = 257916836833793 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398654325184121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2807424825205 + ... + 2807424825346.

It is an arithmetic number, because the mean of its divisors is an integer number (101067293709936).

Almost surely, 2^{398654325189121} is an apocalyptic number.

It is an amenable number.

398654325189121 is a deficient number, since it is larger than the sum of its proper divisors (5614849650623).

398654325189121 is an equidigital number, since it uses as much as digits as its factorization.

398654325189121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614849650622.

The product of its digits is 111974400, while the sum is 67.

The spelling of 398654325189121 in words is "three hundred ninety-eight trillion, six hundred fifty-four billion, three hundred twenty-five million, one hundred eighty-nine thousand, one hundred twenty-one".