8940790891 has 2 divisors, whose sum is σ = 8940790892. Its totient is φ = 8940790890.

The previous prime is 8940790883. The next prime is 8940790933. The reversal of 8940790891 is 1980970498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8940790891 - 2³ = 8940790883 is a prime.

It is not a weakly prime, because it can be changed into another prime (8940790811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4470395445 + 4470395446.

It is an arithmetic number, because the mean of its divisors is an integer number (4470395446).

Almost surely, 2^8940790891 is an apocalyptic number.

8940790891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8940790891 is an equidigital number, since it uses as much as digits as its factorization.

8940790891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 8940790891 is about 94555.7554620553. The cubic root of 8940790891 is about 2075.5123051878.

The spelling of 8940790891 in words is "eight billion, nine hundred forty million, seven hundred ninety thousand, eight hundred ninety-one".