401004490 has 16 divisors (see below), whose sum is σ = 723882600. Its totient is φ = 159940800.

The previous prime is 401004473. The next prime is 401004511. The reversal of 401004490 is 94400104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 236575161 + 164429329 = 15381^2 + 12823^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53961 + ... + 60940.

Almost surely, 2^401004490 is an apocalyptic number.

401004490 is a deficient number, since it is larger than the sum of its proper divisors (322878110).

401004490 is a wasteful number, since it uses less digits than its factorization.

401004490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115257.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 401004490 is about 20025.0965041370. The cubic root of 401004490 is about 737.4225463043.

Adding to 401004490 its reverse (94400104), we get a palindrome (495404594).

The spelling of 401004490 in words is "four hundred one million, four thousand, four hundred ninety".