9404869 has 2 divisors, whose sum is σ = 9404870. Its totient is φ = 9404868.

The previous prime is 9404849. The next prime is 9404881. The reversal of 9404869 is 9684049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 4674244 = 2175^2 + 2162^2 .

It is an emirp because it is prime and its reverse (9684049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9404869 - 2⁹ = 9404357 is a prime.

It is a super-2 number, since 2×9404869² = 176903121814322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9404849) by changing a digit.

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 as a sum of consecutive naturals, namely, 4702434 + 4702435.

It is an arithmetic number, because the mean of its divisors is an integer number (4702435).

Almost surely, 2^9404869 is an apocalyptic number.

It is an amenable number.

9404869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9404869 is an equidigital number, since it uses as much as digits as its factorization.

9404869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 9404869 is about 3066.7358868999. The cubic root of 9404869 is about 211.0818621733.

The spelling of 9404869 in words is "nine million, four hundred four thousand, eight hundred sixty-nine".