394530401 has 4 divisors (see below), whose sum is σ = 394577412. Its totient is φ = 394483392.

The previous prime is 394530391. The next prime is 394530403. The reversal of 394530401 is 104035493.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 370755025 + 23775376 = 19255^2 + 4876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394530401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394530403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7100 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (98644353).

Almost surely, 2^394530401 is an apocalyptic number.

It is an amenable number.

394530401 is a deficient number, since it is larger than the sum of its proper divisors (47011).

394530401 is a wasteful number, since it uses less digits than its factorization.

394530401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47010.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 394530401 is about 19862.7893559792. The cubic root of 394530401 is about 733.4325124583.

Adding to 394530401 its reverse (104035493), we get a palindrome (498565894).

The spelling of 394530401 in words is "three hundred ninety-four million, five hundred thirty thousand, four hundred one".