27934961 has 4 divisors (see below), whose sum is σ = 29578212. Its totient is φ = 26291712.

The previous prime is 27934957. The next prime is 27935003. The reversal of 27934961 is 16943972.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15649936 + 12285025 = 3956^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 27934961 - 2² = 27934957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27934901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821600 + ... + 821633.

It is an arithmetic number, because the mean of its divisors is an integer number (7394553).

Almost surely, 2^27934961 is an apocalyptic number.

It is an amenable number.

27934961 is a deficient number, since it is larger than the sum of its proper divisors (1643251).

27934961 is a wasteful number, since it uses less digits than its factorization.

27934961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643250.

The product of its digits is 81648, while the sum is 41.

The square root of 27934961 is about 5285.3534413509. The cubic root of 27934961 is about 303.4235997777.

The spelling of 27934961 in words is "twenty-seven million, nine hundred thirty-four thousand, nine hundred sixty-one".