394454454492 has 36 divisors (see below), whose sum is σ = 1070662092360. Its totient is φ = 112701272544.

The previous prime is 394454454463. The next prime is 394454454517. The reversal of 394454454492 is 294454454493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335419867 + ... + 335421042.

Almost surely, 2^394454454492 is an apocalyptic number.

It is an amenable number.

394454454492 is an abundant number, since it is smaller than the sum of its proper divisors (676207637868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394454454492 is a wasteful number, since it uses less digits than its factorization.

394454454492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670840930 (or 670840921 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 57.

Subtracting from 394454454492 its reverse (294454454493), we obtain a palindrome (99999999999).

The spelling of 394454454492 in words is "three hundred ninety-four billion, four hundred fifty-four million, four hundred fifty-four thousand, four hundred ninety-two".