27955443 has 4 divisors (see below), whose sum is σ = 37273928. Its totient is φ = 18636960.

The previous prime is 27955427. The next prime is 27955483. The reversal of 27955443 is 34455972.

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

It is not a de Polignac number, because 27955443 - 2⁴ = 27955427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27955483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4659238 + ... + 4659243.

It is an arithmetic number, because the mean of its divisors is an integer number (9318482).

Almost surely, 2^27955443 is an apocalyptic number.

27955443 is a deficient number, since it is larger than the sum of its proper divisors (9318485).

27955443 is an equidigital number, since it uses as much as digits as its factorization.

27955443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318484.

The product of its digits is 151200, while the sum is 39.

The square root of 27955443 is about 5287.2907050776. The cubic root of 27955443 is about 303.4977387023.

The spelling of 27955443 in words is "twenty-seven million, nine hundred fifty-five thousand, four hundred forty-three".