27984919 has 8 divisors (see below), whose sum is σ = 28737072. Its totient is φ = 27236160.

The previous prime is 27984917. The next prime is 27984923. The reversal of 27984919 is 91948972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27984919 - 2¹ = 27984917 is a prime.

It is a super-2 number, since 2×27984919² = 1566311382873122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27984917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31252 + ... + 32134.

It is an arithmetic number, because the mean of its divisors is an integer number (3592134).

Almost surely, 2^27984919 is an apocalyptic number.

27984919 is a deficient number, since it is larger than the sum of its proper divisors (752153).

27984919 is an equidigital number, since it uses as much as digits as its factorization.

27984919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its digits is 326592, while the sum is 49.

The square root of 27984919 is about 5290.0774096416. The cubic root of 27984919 is about 303.6043697798.

The spelling of 27984919 in words is "twenty-seven million, nine hundred eighty-four thousand, nine hundred nineteen".