908813 has 2 divisors, whose sum is σ = 908814. Its totient is φ = 908812.

The previous prime is 908807. The next prime is 908819. The reversal of 908813 is 318809.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (908807) and next prime (908819).

It can be written as a sum of positive squares in only one way, i.e., 619369 + 289444 = 787^2 + 538^2 .

It is an emirp because it is prime and its reverse (318809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 908813 - 2⁴ = 908797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (908819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454406 + 454407.

It is an arithmetic number, because the mean of its divisors is an integer number (454407).

2⁹⁰⁸⁸¹³ is an apocalyptic number.

It is an amenable number.

908813 is a deficient number, since it is larger than the sum of its proper divisors (1).

908813 is an equidigital number, since it uses as much as digits as its factorization.

908813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 908813 is about 953.3168413492. The cubic root of 908813 is about 96.8630582575.

It can be divided in two parts, 90 and 8813, that multiplied together give a triangular number (793170 = T₁₂₅₉).

The spelling of 908813 in words is "nine hundred eight thousand, eight hundred thirteen".