27939899 has 8 divisors (see below), whose sum is σ = 31673040. Its totient is φ = 24433056.

The previous prime is 27939887. The next prime is 27939907. The reversal of 27939899 is 99893972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27939899 is a prime.

It is a super-2 number, since 2×27939899² = 1561275912260402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27939869) 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 7 ways as a sum of consecutive naturals, for example, 56312 + ... + 56805.

It is an arithmetic number, because the mean of its divisors is an integer number (3959130).

Almost surely, 2^27939899 is an apocalyptic number.

27939899 is a deficient number, since it is larger than the sum of its proper divisors (3733141).

27939899 is a wasteful number, since it uses less digits than its factorization.

27939899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113149.

The product of its digits is 2204496, while the sum is 56.

The square root of 27939899 is about 5285.8205607077. The cubic root of 27939899 is about 303.4414772259.

The spelling of 27939899 in words is "twenty-seven million, nine hundred thirty-nine thousand, eight hundred ninety-nine".