909140893 has 2 divisors, whose sum is σ = 909140894. Its totient is φ = 909140892.

The previous prime is 909140879. The next prime is 909140993. The reversal of 909140893 is 398041909.

909140893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563255289 + 345885604 = 23733^2 + 18598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-909140893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909140593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454570446 + 454570447.

It is an arithmetic number, because the mean of its divisors is an integer number (454570447).

Almost surely, 2^909140893 is an apocalyptic number.

It is an amenable number.

909140893 is a deficient number, since it is larger than the sum of its proper divisors (1).

909140893 is an equidigital number, since it uses as much as digits as its factorization.

909140893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 909140893 is about 30151.9633357432. The cubic root of 909140893 is about 968.7470601479.

Subtracting from 909140893 its product of nonzero digits (69984), we obtain a palindrome (909070909).

The spelling of 909140893 in words is "nine hundred nine million, one hundred forty thousand, eight hundred ninety-three".