27955199 has 4 divisors (see below), whose sum is σ = 27968736. Its totient is φ = 27941664.

The previous prime is 27955181. The next prime is 27955201. The reversal of 27955199 is 99155972.

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

It is a cyclic number.

It is not a de Polignac number, because 27955199 - 2¹² = 27951103 is a prime.

It is a super-2 number, since 2×27955199² = 1562986302259202, 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 (27955139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2954 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (6992184).

Almost surely, 2^27955199 is an apocalyptic number.

27955199 is a deficient number, since it is larger than the sum of its proper divisors (13537).

27955199 is a wasteful number, since it uses less digits than its factorization.

27955199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13536.

The product of its digits is 255150, while the sum is 47.

The square root of 27955199 is about 5287.2676308279. The cubic root of 27955199 is about 303.4968557059.

The spelling of 27955199 in words is "twenty-seven million, nine hundred fifty-five thousand, one hundred ninety-nine".