901309 has 2 divisors, whose sum is σ = 901310. Its totient is φ = 901308.

The previous prime is 901279. The next prime is 901333. The reversal of 901309 is 903109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 225625 = 822^2 + 475^2 .

It is an emirp because it is prime and its reverse (903109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 901309 - 2⁹ = 900797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 901309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901339) 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, 450654 + 450655.

It is an arithmetic number, because the mean of its divisors is an integer number (450655).

2⁹⁰¹³⁰⁹ is an apocalyptic number.

It is an amenable number.

901309 is a deficient number, since it is larger than the sum of its proper divisors (1).

901309 is an equidigital number, since it uses as much as digits as its factorization.

901309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 901309 is about 949.3729509524. The cubic root of 901309 is about 96.5957241412.

The spelling of 901309 in words is "nine hundred one thousand, three hundred nine".