8940440387 has 2 divisors, whose sum is σ = 8940440388. Its totient is φ = 8940440386.

The previous prime is 8940440371. The next prime is 8940440407. The reversal of 8940440387 is 7830440498.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8940440387 - 2⁴ = 8940440371 is a prime.

It is not a weakly prime, because it can be changed into another prime (8940440317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4470220193 + 4470220194.

It is an arithmetic number, because the mean of its divisors is an integer number (4470220194).

Almost surely, 2^8940440387 is an apocalyptic number.

8940440387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8940440387 is an equidigital number, since it uses as much as digits as its factorization.

8940440387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 8940440387 is about 94553.9020189014. The cubic root of 8940440387 is about 2075.4851828717.

The spelling of 8940440387 in words is "eight billion, nine hundred forty million, four hundred forty thousand, three hundred eighty-seven".