404311489 has 2 divisors, whose sum is σ = 404311490. Its totient is φ = 404311488.

The previous prime is 404311471. The next prime is 404311577. The reversal of 404311489 is 984113404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208311489 + 196000000 = 14433^2 + 14000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404311489 is a prime.

It is not a weakly prime, because it can be changed into another prime (404315489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202155744 + 202155745.

It is an arithmetic number, because the mean of its divisors is an integer number (202155745).

Almost surely, 2^404311489 is an apocalyptic number.

It is an amenable number.

404311489 is a deficient number, since it is larger than the sum of its proper divisors (1).

404311489 is an equidigital number, since it uses as much as digits as its factorization.

404311489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 404311489 is about 20107.4983277383. The cubic root of 404311489 is about 739.4441217375. Note that the first 3 decimals are identical.

The spelling of 404311489 in words is "four hundred four million, three hundred eleven thousand, four hundred eighty-nine".