6409969427 has 2 divisors, whose sum is σ = 6409969428. Its totient is φ = 6409969426.

The previous prime is 6409969403. The next prime is 6409969469. The reversal of 6409969427 is 7249699046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6409969427 - 2¹⁰ = 6409968403 is a prime.

It is not a weakly prime, because it can be changed into another prime (6409966427) 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 as a sum of consecutive naturals, namely, 3204984713 + 3204984714.

It is an arithmetic number, because the mean of its divisors is an integer number (3204984714).

Almost surely, 2^6409969427 is an apocalyptic number.

6409969427 is a deficient number, since it is larger than the sum of its proper divisors (1).

6409969427 is an equidigital number, since it uses as much as digits as its factorization.

6409969427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The square root of 6409969427 is about 80062.2846726222. The cubic root of 6409969427 is about 1857.5990745798.

The spelling of 6409969427 in words is "six billion, four hundred nine million, nine hundred sixty-nine thousand, four hundred twenty-seven".