394492254752 has 18 divisors (see below), whose sum is σ = 776663621559. Its totient is φ = 197244350880.

The previous prime is 394492254743. The next prime is 394492254757. The reversal of 394492254752 is 257452294493.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 197246127376 + 197246127376 = 444124^2 + 444124^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=444124.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394492254757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3497477 + ... + 3608507.

Almost surely, 2^394492254752 is an apocalyptic number.

394492254752 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

394492254752 is a deficient number, since it is larger than the sum of its proper divisors (382171366807).

394492254752 is an frugal number, since it uses more digits than its factorization.

394492254752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222072 (or 111033 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The spelling of 394492254752 in words is "three hundred ninety-four billion, four hundred ninety-two million, two hundred fifty-four thousand, seven hundred fifty-two".