404684701186489 has 2 divisors, whose sum is σ = 404684701186490. Its totient is φ = 404684701186488.

The previous prime is 404684701186351. The next prime is 404684701186501. The reversal of 404684701186489 is 984681107486404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357796896870400 + 46887804316089 = 18915520^2 + 6847467^2 .

It is a cyclic number.

It is not a de Polignac number, because 404684701186489 - 2¹³ = 404684701178297 is a prime.

It is a super-2 number, since 2×404684701186489² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404684707186489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202342350593244 + 202342350593245.

It is an arithmetic number, because the mean of its divisors is an integer number (202342350593245).

Almost surely, 2^{404684701186489} is an apocalyptic number.

It is an amenable number.

404684701186489 is a deficient number, since it is larger than the sum of its proper divisors (1).

404684701186489 is an equidigital number, since it uses as much as digits as its factorization.

404684701186489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 297271296, while the sum is 70.

The spelling of 404684701186489 in words is "four hundred four trillion, six hundred eighty-four billion, seven hundred one million, one hundred eighty-six thousand, four hundred eighty-nine".