404044442 has 4 divisors (see below), whose sum is σ = 606066666. Its totient is φ = 202022220.

The previous prime is 404044429. The next prime is 404044499. The reversal of 404044442 is 244440404.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 399960001 + 4084441 = 19999^2 + 2021^2 .

It is a super-2 number, since 2×404044442² = 326503822222182728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101011109 + ... + 101011112.

Almost surely, 2^404044442 is an apocalyptic number.

404044442 is a deficient number, since it is larger than the sum of its proper divisors (202022224).

404044442 is a wasteful number, since it uses less digits than its factorization.

404044442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202022223.

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 404044442 is about 20100.8567479100. The cubic root of 404044442 is about 739.2812853839.

Adding to 404044442 its reverse (244440404), we get a palindrome (648484846).

The spelling of 404044442 in words is "four hundred four million, forty-four thousand, four hundred forty-two".