909973 has 2 divisors, whose sum is σ = 909974. Its totient is φ = 909972.

The previous prime is 909971. The next prime is 909977. The reversal of 909973 is 379909.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 908209 + 1764 = 953^2 + 42^2 .

It is an emirp because it is prime and its reverse (379909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 909973 - 2¹ = 909971 is a prime.

Together with 909971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909971) 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, 454986 + 454987.

It is an arithmetic number, because the mean of its divisors is an integer number (454987).

2⁹⁰⁹⁹⁷³ is an apocalyptic number.

It is an amenable number.

909973 is a deficient number, since it is larger than the sum of its proper divisors (1).

909973 is an equidigital number, since it uses as much as digits as its factorization.

909973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 909973 is about 953.9250494667. The cubic root of 909973 is about 96.9042524217.

The spelling of 909973 in words is "nine hundred nine thousand, nine hundred seventy-three".