8909401 has 2 divisors, whose sum is σ = 8909402. Its totient is φ = 8909400.

The previous prime is 8909393. The next prime is 8909437. The reversal of 8909401 is 1049098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6656400 + 2253001 = 2580^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 8909401 - 2³ = 8909393 is a prime.

It is not a weakly prime, because it can be changed into another prime (8909491) 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, 4454700 + 4454701.

It is an arithmetic number, because the mean of its divisors is an integer number (4454701).

Almost surely, 2^8909401 is an apocalyptic number.

It is an amenable number.

8909401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8909401 is an equidigital number, since it uses as much as digits as its factorization.

8909401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8909401 is about 2984.8619733582. The cubic root of 8909401 is about 207.3080510684.

The spelling of 8909401 in words is "eight million, nine hundred nine thousand, four hundred one".