404221054 has 4 divisors (see below), whose sum is σ = 606331584. Its totient is φ = 202110526.

The previous prime is 404221043. The next prime is 404221063. The reversal of 404221054 is 450122404.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055262 + ... + 101055265.

It is an arithmetic number, because the mean of its divisors is an integer number (151582896).

Almost surely, 2^404221054 is an apocalyptic number.

404221054 is a deficient number, since it is larger than the sum of its proper divisors (202110530).

404221054 is a wasteful number, since it uses less digits than its factorization.

404221054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202110529.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 404221054 is about 20105.2494140212. The cubic root of 404221054 is about 739.3889855224.

Adding to 404221054 its reverse (450122404), we get a palindrome (854343458).

The spelling of 404221054 in words is "four hundred four million, two hundred twenty-one thousand, fifty-four".