394424361 has 24 divisors (see below), whose sum is σ = 604664424. Its totient is φ = 246896640.

The previous prime is 394424341. The next prime is 394424419. The reversal of 394424361 is 163424493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 308213136 + 86211225 = 17556^2 + 9285^2 .

It is not a de Polignac number, because 394424361 - 2¹⁸ = 394162217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394424311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67101 + ... + 72741.

It is an arithmetic number, because the mean of its divisors is an integer number (25194351).

Almost surely, 2^394424361 is an apocalyptic number.

It is an amenable number.

394424361 is a deficient number, since it is larger than the sum of its proper divisors (210240063).

394424361 is a wasteful number, since it uses less digits than its factorization.

394424361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121 (or 6118 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 394424361 is about 19860.1198636866. The cubic root of 394424361 is about 733.3667970726.

The spelling of 394424361 in words is "three hundred ninety-four million, four hundred twenty-four thousand, three hundred sixty-one".