8540774947 has 2 divisors, whose sum is σ = 8540774948. Its totient is φ = 8540774946.

The previous prime is 8540774929. The next prime is 8540774953. The reversal of 8540774947 is 7494770458.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8540774947 - 2⁷ = 8540774819 is a prime.

It is not a weakly prime, because it can be changed into another prime (8540774447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270387473 + 4270387474.

It is an arithmetic number, because the mean of its divisors is an integer number (4270387474).

Almost surely, 2^8540774947 is an apocalyptic number.

8540774947 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540774947 is an equidigital number, since it uses as much as digits as its factorization.

8540774947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The square root of 8540774947 is about 92416.3132082210. The cubic root of 8540774947 is about 2044.0856657449.

The spelling of 8540774947 in words is "eight billion, five hundred forty million, seven hundred seventy-four thousand, nine hundred forty-seven".