27699939 has 24 divisors (see below), whose sum is σ = 41401152. Its totient is φ = 17832960.

The previous prime is 27699913. The next prime is 27699941. The reversal of 27699939 is 93999672.

It is not a de Polignac number, because 27699939 - 2⁵ = 27699907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27692939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64054 + ... + 64484.

It is an arithmetic number, because the mean of its divisors is an integer number (1725048).

Almost surely, 2^27699939 is an apocalyptic number.

27699939 is a deficient number, since it is larger than the sum of its proper divisors (13701213).

27699939 is a wasteful number, since it uses less digits than its factorization.

27699939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 664 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 27699939 is about 5263.0731516862. The cubic root of 27699939 is about 302.5702826016.

The spelling of 27699939 in words is "twenty-seven million, six hundred ninety-nine thousand, nine hundred thirty-nine".