398889050471 has 8 divisors (see below), whose sum is σ = 408682738464. Its totient is φ = 389098442880.

The previous prime is 398889050453. The next prime is 398889050479. The reversal of 398889050471 is 174050988893.

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-398889050471 is a prime.

It is a super-3 number, since 3×398889050471³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398889050479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506846 + ... + 1026971.

It is an arithmetic number, because the mean of its divisors is an integer number (51085342308).

Almost surely, 2^398889050471 is an apocalyptic number.

398889050471 is a deficient number, since it is larger than the sum of its proper divisors (9793687993).

398889050471 is a wasteful number, since it uses less digits than its factorization.

398889050471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540201.

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 398889050471 in words is "three hundred ninety-eight billion, eight hundred eighty-nine million, fifty thousand, four hundred seventy-one".