404062489 has 2 divisors, whose sum is σ = 404062490. Its totient is φ = 404062488.

The previous prime is 404062487. The next prime is 404062507. The reversal of 404062489 is 984260404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334890000 + 69172489 = 18300^2 + 8317^2 .

It is a cyclic number.

It is not a de Polignac number, because 404062489 - 2¹ = 404062487 is a prime.

Together with 404062487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (404062487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202031244 + 202031245.

It is an arithmetic number, because the mean of its divisors is an integer number (202031245).

Almost surely, 2^404062489 is an apocalyptic number.

It is an amenable number.

404062489 is a deficient number, since it is larger than the sum of its proper divisors (1).

404062489 is an equidigital number, since it uses as much as digits as its factorization.

404062489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 404062489 is about 20101.3056541111. The cubic root of 404062489 is about 739.2922921028.

The spelling of 404062489 in words is "four hundred four million, sixty-two thousand, four hundred eighty-nine".