492187989447 has 48 divisors (see below), whose sum is σ = 886964053248. Its totient is φ = 255509130240.

The previous prime is 492187989409. The next prime is 492187989451. The reversal of 492187989447 is 744989781294.

492187989447 is a `hidden beast` number, since 4 + 9 + 21 + 87 + 9 + 89 + 447 = 666.

492187989447 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 492187989447 - 2⁸ = 492187989191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492187989487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 788263 + ... + 1267175.

It is an arithmetic number, because the mean of its divisors is an integer number (18478417776).

Almost surely, 2^492187989447 is an apocalyptic number.

492187989447 is a deficient number, since it is larger than the sum of its proper divisors (394776063801).

492187989447 is a wasteful number, since it uses less digits than its factorization.

492187989447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480420 (or 480417 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 492187989447 in words is "four hundred ninety-two billion, one hundred eighty-seven million, nine hundred eighty-nine thousand, four hundred forty-seven".