6439740883 has 2 divisors, whose sum is σ = 6439740884. Its totient is φ = 6439740882.

The previous prime is 6439740863. The next prime is 6439740907. The reversal of 6439740883 is 3880479346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6439740883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6439740883.

It is not a weakly prime, because it can be changed into another prime (6439740803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219870441 + 3219870442.

It is an arithmetic number, because the mean of its divisors is an integer number (3219870442).

Almost surely, 2^6439740883 is an apocalyptic number.

6439740883 is a deficient number, since it is larger than the sum of its proper divisors (1).

6439740883 is an equidigital number, since it uses as much as digits as its factorization.

6439740883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The square root of 6439740883 is about 80247.9961307446. The cubic root of 6439740883 is about 1860.4705406633.

The spelling of 6439740883 in words is "six billion, four hundred thirty-nine million, seven hundred forty thousand, eight hundred eighty-three".