404431130 has 16 divisors (see below), whose sum is σ = 736157160. Its totient is φ = 159954432.

The previous prime is 404431087. The next prime is 404431141. The reversal of 404431130 is 31134404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 119530489 + 284900641 = 10933^2 + 16879^2 .

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, 226319 + ... + 228098.

Almost surely, 2^404431130 is an apocalyptic number.

404431130 is a deficient number, since it is larger than the sum of its proper divisors (331726030).

404431130 is a wasteful number, since it uses less digits than its factorization.

404431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454513.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 404431130 is about 20110.4731421217. The cubic root of 404431130 is about 739.5170515715.

Adding to 404431130 its reverse (31134404), we get a palindrome (435565534).

The spelling of 404431130 in words is "four hundred four million, four hundred thirty-one thousand, one hundred thirty".