917239093 has 2 divisors, whose sum is σ = 917239094. Its totient is φ = 917239092.

The previous prime is 917239069. The next prime is 917239121. The reversal of 917239093 is 390932719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502790929 + 414448164 = 22423^2 + 20358^2 .

It is a cyclic number.

It is not a de Polignac number, because 917239093 - 2¹³ = 917230901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (917239693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458619546 + 458619547.

It is an arithmetic number, because the mean of its divisors is an integer number (458619547).

Almost surely, 2^917239093 is an apocalyptic number.

It is an amenable number.

917239093 is a deficient number, since it is larger than the sum of its proper divisors (1).

917239093 is an equidigital number, since it uses as much as digits as its factorization.

917239093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 917239093 is about 30285.9553753881. The cubic root of 917239093 is about 971.6149429234.

The spelling of 917239093 in words is "nine hundred seventeen million, two hundred thirty-nine thousand, ninety-three".