404231140 has 24 divisors (see below), whose sum is σ = 862804152. Its totient is φ = 159041280.

The previous prime is 404231131. The next prime is 404231173. The reversal of 404231140 is 41132404.

It can be written as a sum of positive squares in 4 ways, for example, as 9096256 + 395134884 = 3016^2 + 19878^2 .

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, 164449 + ... + 166888.

It is an arithmetic number, because the mean of its divisors is an integer number (35950173).

Almost surely, 2^404231140 is an apocalyptic number.

It is an amenable number.

404231140 is an abundant number, since it is smaller than the sum of its proper divisors (458573012).

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

404231140 is a wasteful number, since it uses less digits than its factorization.

404231140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331407 (or 331405 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 404231140 is about 20105.5002424710. The cubic root of 404231140 is about 739.3951351405.

Adding to 404231140 its reverse (41132404), we get a palindrome (445363544).

The spelling of 404231140 in words is "four hundred four million, two hundred thirty-one thousand, one hundred forty".