27396791 has 4 divisors (see below), whose sum is σ = 27421512. Its totient is φ = 27372072.

The previous prime is 27396767. The next prime is 27396797. The reversal of 27396791 is 19769372.

It is a happy number.

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 27396791 - 2¹⁸ = 27134647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27396797) 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, 10616 + ... + 12941.

It is an arithmetic number, because the mean of its divisors is an integer number (6855378).

Almost surely, 2^27396791 is an apocalyptic number.

27396791 is a deficient number, since it is larger than the sum of its proper divisors (24721).

27396791 is a wasteful number, since it uses less digits than its factorization.

27396791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24720.

The product of its digits is 142884, while the sum is 44.

The square root of 27396791 is about 5234.1943983769. The cubic root of 27396791 is about 301.4624554584.

The spelling of 27396791 in words is "twenty-seven million, three hundred ninety-six thousand, seven hundred ninety-one".