8728443377 has 2 divisors, whose sum is σ = 8728443378. Its totient is φ = 8728443376.

The previous prime is 8728443349. The next prime is 8728443379. The reversal of 8728443377 is 7733448278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4702667776 + 4025775601 = 68576^2 + 63449^2 .

It is a cyclic number.

It is not a de Polignac number, because 8728443377 - 2⁶ = 8728443313 is a prime.

Together with 8728443379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8728443379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364221688 + 4364221689.

It is an arithmetic number, because the mean of its divisors is an integer number (4364221689).

Almost surely, 2^8728443377 is an apocalyptic number.

It is an amenable number.

8728443377 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728443377 is an equidigital number, since it uses as much as digits as its factorization.

8728443377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 53.

The square root of 8728443377 is about 93426.1386176267. The cubic root of 8728443377 is about 2058.9490489492.

The spelling of 8728443377 in words is "eight billion, seven hundred twenty-eight million, four hundred forty-three thousand, three hundred seventy-seven".