394345397250 has 144 divisors (see below), whose sum is σ = 1240401722040. Its totient is φ = 90136065600.

The previous prime is 394345397221. The next prime is 394345397293. The reversal of 394345397250 is 52793543493.

394345397250 is a `hidden beast` number, since 3 + 9 + 4 + 34 + 539 + 72 + 5 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 53351298441 + 340994098809 = 230979^2 + 583947^2 .

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1678165 + ... + 1898664.

Almost surely, 2^394345397250 is an apocalyptic number.

394345397250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

394345397250 is an abundant number, since it is smaller than the sum of its proper divisors (846056324790).

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

394345397250 is a wasteful number, since it uses less digits than its factorization.

394345397250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576866 (or 3576846 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 54.

The spelling of 394345397250 in words is "three hundred ninety-four billion, three hundred forty-five million, three hundred ninety-seven thousand, two hundred fifty".