394404334 has 4 divisors (see below), whose sum is σ = 591606504. Its totient is φ = 197202166.

The previous prime is 394404319. The next prime is 394404347. The reversal of 394404334 is 433404493.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 394404334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98601082 + ... + 98601085.

It is an arithmetic number, because the mean of its divisors is an integer number (147901626).

Almost surely, 2^394404334 is an apocalyptic number.

394404334 is a deficient number, since it is larger than the sum of its proper divisors (197202170).

394404334 is a wasteful number, since it uses less digits than its factorization.

394404334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197202169.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 394404334 is about 19859.6156558983. The cubic root of 394404334 is about 733.3543845656.

The spelling of 394404334 in words is "three hundred ninety-four million, four hundred four thousand, three hundred thirty-four".