6400305269 has 2 divisors, whose sum is σ = 6400305270. Its totient is φ = 6400305268.

The previous prime is 6400305217. The next prime is 6400305319. The reversal of 6400305269 is 9625030046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4811087044 + 1589218225 = 69362^2 + 39865^2 .

It is a cyclic number.

It is not a de Polignac number, because 6400305269 - 2¹⁶ = 6400239733 is a prime.

It is a super-2 number, since 2×6400305269² = 81927815072778324722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6400305209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200152634 + 3200152635.

It is an arithmetic number, because the mean of its divisors is an integer number (3200152635).

Almost surely, 2^6400305269 is an apocalyptic number.

It is an amenable number.

6400305269 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400305269 is an equidigital number, since it uses as much as digits as its factorization.

6400305269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 6400305269 is about 80001.9079084993. The cubic root of 6400305269 is about 1856.6650524171.

The spelling of 6400305269 in words is "six billion, four hundred million, three hundred five thousand, two hundred sixty-nine".