394437273 has 8 divisors (see below), whose sum is σ = 542881536. Its totient is φ = 254475600.

The previous prime is 394437259. The next prime is 394437313. The reversal of 394437273 is 372734493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394437273 - 2⁶ = 394437209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394437233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120538 + ... + 2120723.

It is an arithmetic number, because the mean of its divisors is an integer number (67860192).

Almost surely, 2^394437273 is an apocalyptic number.

It is an amenable number.

394437273 is a deficient number, since it is larger than the sum of its proper divisors (148444263).

394437273 is a wasteful number, since it uses less digits than its factorization.

394437273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241295.

The product of its digits is 381024, while the sum is 42.

The square root of 394437273 is about 19860.4449345930. Note that the first 3 decimals coincide. The cubic root of 394437273 is about 733.3747995607.

The spelling of 394437273 in words is "three hundred ninety-four million, four hundred thirty-seven thousand, two hundred seventy-three".