404144371 has 2 divisors, whose sum is σ = 404144372. Its totient is φ = 404144370.

The previous prime is 404144359. The next prime is 404144441. The reversal of 404144371 is 173441404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404144371 is a prime.

It is a super-2 number, since 2×404144371² = 326665345221971282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404144341) by changing a digit.

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, 202072185 + 202072186.

It is an arithmetic number, because the mean of its divisors is an integer number (202072186).

Almost surely, 2^404144371 is an apocalyptic number.

404144371 is a deficient number, since it is larger than the sum of its proper divisors (1).

404144371 is an equidigital number, since it uses as much as digits as its factorization.

404144371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 404144371 is about 20103.3422843069. The cubic root of 404144371 is about 739.3422271537.

Adding to 404144371 its reverse (173441404), we get a palindrome (577585775).

The spelling of 404144371 in words is "four hundred four million, one hundred forty-four thousand, three hundred seventy-one".