394662242 has 16 divisors (see below), whose sum is σ = 675033912. Its totient is φ = 171436800.

The previous prime is 394662241. The next prime is 394662263. The reversal of 394662242 is 242266493.

It can be written as a sum of positive squares in 4 ways, for example, as 254689681 + 139972561 = 15959^2 + 11831^2 .

It is a junction number, because it is equal to n+sod(n) for n = 394662196 and 394662205.

It is not an unprimeable number, because it can be changed into a prime (394662241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446009 + ... + 446892.

Almost surely, 2^394662242 is an apocalyptic number.

394662242 is a deficient number, since it is larger than the sum of its proper divisors (280371670).

394662242 is a wasteful number, since it uses less digits than its factorization.

394662242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892933.

The product of its digits is 124416, while the sum is 38.

The square root of 394662242 is about 19866.1078724545. The cubic root of 394662242 is about 733.5142008881.

The spelling of 394662242 in words is "three hundred ninety-four million, six hundred sixty-two thousand, two hundred forty-two".