6442450939 has 2 divisors, whose sum is σ = 6442450940. Its totient is φ = 6442450938.

The previous prime is 6442450933. The next prime is 6442450967. The reversal of 6442450939 is 9390542446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6442450939 - 2¹⁷ = 6442319867 is a prime.

It is not a weakly prime, because it can be changed into another prime (6442450933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221225469 + 3221225470.

It is an arithmetic number, because the mean of its divisors is an integer number (3221225470).

Almost surely, 2^6442450939 is an apocalyptic number.

6442450939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6442450939 is an equidigital number, since it uses as much as digits as its factorization.

6442450939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 46.

The square root of 6442450939 is about 80264.8798603723. The cubic root of 6442450939 is about 1860.7314865787.

The spelling of 6442450939 in words is "six billion, four hundred forty-two million, four hundred fifty thousand, nine hundred thirty-nine".