993471000391 has 6 divisors (see below), whose sum is σ = 1048510945392. Its totient is φ = 941183052660.

The previous prime is 993471000359. The next prime is 993471000407. The reversal of 993471000391 is 193000174399.

It is not a de Polignac number, because 993471000391 - 2⁵ = 993471000359 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 (993471000331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1375998255 + ... + 1375998976.

It is an arithmetic number, because the mean of its divisors is an integer number (174751824232).

Almost surely, 2^993471000391 is an apocalyptic number.

993471000391 is the 630388-th centered pentagonal number.

993471000391 is a deficient number, since it is larger than the sum of its proper divisors (55039945001).

993471000391 is a wasteful number, since it uses less digits than its factorization.

993471000391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751997269 (or 2751997250 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The spelling of 993471000391 in words is "nine hundred ninety-three billion, four hundred seventy-one million, three hundred ninety-one", and thus it is an aban number.