394417684 has 6 divisors (see below), whose sum is σ = 690230954. Its totient is φ = 197208840.

The previous prime is 394417649. The next prime is 394417693. The reversal of 394417684 is 486714493.

It can be written as a sum of positive squares in only one way, i.e., 316484100 + 77933584 = 17790^2 + 8828^2 .

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, 49302207 + ... + 49302214.

Almost surely, 2^394417684 is an apocalyptic number.

It is an amenable number.

394417684 is a deficient number, since it is larger than the sum of its proper divisors (295813270).

394417684 is a wasteful number, since it uses less digits than its factorization.

394417684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98604425 (or 98604423 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 394417684 is about 19859.9517622778. The cubic root of 394417684 is about 733.3626587906.

The spelling of 394417684 in words is "three hundred ninety-four million, four hundred seventeen thousand, six hundred eighty-four".