6930891439 has 2 divisors, whose sum is σ = 6930891440. Its totient is φ = 6930891438.

The previous prime is 6930891413. The next prime is 6930891463. The reversal of 6930891439 is 9341980396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6930891439 - 2²¹ = 6928794287 is a prime.

It is a super-2 number, since 2×6930891439² = 96074512278406981442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6930891479) 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, 3465445719 + 3465445720.

It is an arithmetic number, because the mean of its divisors is an integer number (3465445720).

Almost surely, 2^6930891439 is an apocalyptic number.

6930891439 is a deficient number, since it is larger than the sum of its proper divisors (1).

6930891439 is an equidigital number, since it uses as much as digits as its factorization.

6930891439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 6930891439 is about 83251.9755861685. The cubic root of 6930891439 is about 1906.6151171566.

The spelling of 6930891439 in words is "six billion, nine hundred thirty million, eight hundred ninety-one thousand, four hundred thirty-nine".