27938779 has 12 divisors (see below), whose sum is σ = 31140088. Its totient is φ = 25043040.

The previous prime is 27938761. The next prime is 27938783. The reversal of 27938779 is 97783972.

It is a happy number.

It is not a de Polignac number, because 27938779 - 2⁵ = 27938747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27938789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7252 + ... + 10414.

Almost surely, 2^27938779 is an apocalyptic number.

27938779 is a deficient number, since it is larger than the sum of its proper divisors (3201309).

27938779 is a wasteful number, since it uses less digits than its factorization.

27938779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258 (or 3247 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 52.

The square root of 27938779 is about 5285.7146158301. The cubic root of 27938779 is about 303.4374225824.

The spelling of 27938779 in words is "twenty-seven million, nine hundred thirty-eight thousand, seven hundred seventy-nine".