394245873 has 48 divisors (see below), whose sum is σ = 691506816. Its totient is φ = 219749760.

The previous prime is 394245851. The next prime is 394245883. The reversal of 394245873 is 378542493.

It is not a de Polignac number, because 394245873 - 2¹² = 394241777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394245883) 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, 66915 + ... + 72567.

It is an arithmetic number, because the mean of its divisors is an integer number (14406392).

Almost surely, 2^394245873 is an apocalyptic number.

It is an amenable number.

394245873 is a deficient number, since it is larger than the sum of its proper divisors (297260943).

394245873 is an equidigital number, since it uses as much as digits as its factorization.

394245873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5716 (or 5704 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 394245873 is about 19855.6257267304. The cubic root of 394245873 is about 733.2561574201.

The spelling of 394245873 in words is "three hundred ninety-four million, two hundred forty-five thousand, eight hundred seventy-three".