27943880439 has 4 divisors (see below), whose sum is σ = 37258507256. Its totient is φ = 18629253624.

The previous prime is 27943880423. The next prime is 27943880467. The reversal of 27943880439 is 93408834972.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27943880439 - 2⁴ = 27943880423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27943880479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657313404 + ... + 4657313409.

It is an arithmetic number, because the mean of its divisors is an integer number (9314626814).

Almost surely, 2^27943880439 is an apocalyptic number.

27943880439 is a deficient number, since it is larger than the sum of its proper divisors (9314626817).

27943880439 is an equidigital number, since it uses as much as digits as its factorization.

27943880439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9314626816.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 27943880439 in words is "twenty-seven billion, nine hundred forty-three million, eight hundred eighty thousand, four hundred thirty-nine".