6450666039 has 8 divisors (see below), whose sum is σ = 9556542320. Its totient is φ = 4300444008.

The previous prime is 6450666029. The next prime is 6450666071. The reversal of 6450666039 is 9306660546.

It is not a de Polignac number, because 6450666039 - 2¹⁵ = 6450633271 is a prime.

It is a super-2 number, since 2×6450666039² = 83222184693415899042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6450665985 and 6450666003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450666029) 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 in 7 ways as a sum of consecutive naturals, for example, 119456752 + ... + 119456805.

It is an arithmetic number, because the mean of its divisors is an integer number (1194567790).

Almost surely, 2^6450666039 is an apocalyptic number.

6450666039 is a deficient number, since it is larger than the sum of its proper divisors (3105876281).

6450666039 is a wasteful number, since it uses less digits than its factorization.

6450666039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238913566 (or 238913560 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 6450666039 is about 80316.0384916985. The cubic root of 6450666039 is about 1861.5220553968.

The spelling of 6450666039 in words is "six billion, four hundred fifty million, six hundred sixty-six thousand, thirty-nine".