394022401 has 4 divisors (see below), whose sum is σ = 394779204. Its totient is φ = 393265600.

The previous prime is 394022393. The next prime is 394022467. The reversal of 394022401 is 104220493.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150038001 + 243984400 = 12249^2 + 15620^2 .

It is a cyclic number.

It is not a de Polignac number, because 394022401 - 2³ = 394022393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394020401) 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, 377620 + ... + 378661.

It is an arithmetic number, because the mean of its divisors is an integer number (98694801).

Almost surely, 2^394022401 is an apocalyptic number.

It is an amenable number.

394022401 is a deficient number, since it is larger than the sum of its proper divisors (756803).

394022401 is an equidigital number, since it uses as much as digits as its factorization.

394022401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756802.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 394022401 is about 19849.9975062971. The cubic root of 394022401 is about 733.1175863727.

Adding to 394022401 its reverse (104220493), we get a palindrome (498242894).

The spelling of 394022401 in words is "three hundred ninety-four million, twenty-two thousand, four hundred one".