404039442 has 16 divisors (see below), whose sum is σ = 855613152. Its totient is φ = 126757440.

The previous prime is 404039437. The next prime is 404039477. The reversal of 404039442 is 244930404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980484 + ... + 1980687.

It is an arithmetic number, because the mean of its divisors is an integer number (53475822).

Almost surely, 2^404039442 is an apocalyptic number.

404039442 is an abundant number, since it is smaller than the sum of its proper divisors (451573710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404039442 is a wasteful number, since it uses less digits than its factorization.

404039442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961193.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 404039442 is about 20100.7323747171. The cubic root of 404039442 is about 739.2782358665.

Adding to 404039442 its reverse (244930404), we get a palindrome (648969846).

The spelling of 404039442 in words is "four hundred four million, thirty-nine thousand, four hundred forty-two".