394437274 has 32 divisors (see below), whose sum is σ = 738631296. Its totient is φ = 153472320.

The previous prime is 394437259. The next prime is 394437313. The reversal of 394437274 is 472734493.

It is a self number, because there is not a number n which added to its sum of digits gives 394437274.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 170872 + ... + 173164.

It is an arithmetic number, because the mean of its divisors is an integer number (23082228).

Almost surely, 2^394437274 is an apocalyptic number.

394437274 is a deficient number, since it is larger than the sum of its proper divisors (344194022).

394437274 is a wasteful number, since it uses less digits than its factorization.

394437274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 508032, while the sum is 43.

The square root of 394437274 is about 19860.4449597687. Note that the first 3 decimals coincide. The cubic root of 394437274 is about 733.3748001804.

The spelling of 394437274 in words is "three hundred ninety-four million, four hundred thirty-seven thousand, two hundred seventy-four".