6411908639 has 2 divisors, whose sum is σ = 6411908640. Its totient is φ = 6411908638.

The previous prime is 6411908623. The next prime is 6411908641. The reversal of 6411908639 is 9368091146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6411908639 - 2⁴ = 6411908623 is a prime.

It is a super-2 number, since 2×6411908639² = 82225144789765664642, which contains 22 as substring.

Together with 6411908641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6411908593 and 6411908602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6411908689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205954319 + 3205954320.

It is an arithmetic number, because the mean of its divisors is an integer number (3205954320).

Almost surely, 2^6411908639 is an apocalyptic number.

6411908639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6411908639 is an equidigital number, since it uses as much as digits as its factorization.

6411908639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 6411908639 is about 80074.3944029551. The cubic root of 6411908639 is about 1857.7863825564.

The spelling of 6411908639 in words is "six billion, four hundred eleven million, nine hundred eight thousand, six hundred thirty-nine".