27979413 has 16 divisors (see below), whose sum is σ = 46511616. Its totient is φ = 14534640.

The previous prime is 27979409. The next prime is 27979417. The reversal of 27979413 is 31497972.

It is an interprime number because it is at equal distance from previous prime (27979409) and next prime (27979417).

It is not a de Polignac number, because 27979413 - 2² = 27979409 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27979417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60331 + ... + 60792.

It is an arithmetic number, because the mean of its divisors is an integer number (2906976).

Almost surely, 2^27979413 is an apocalyptic number.

It is an amenable number.

27979413 is a deficient number, since it is larger than the sum of its proper divisors (18532203).

27979413 is a wasteful number, since it uses less digits than its factorization.

27979413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121144.

The product of its digits is 95256, while the sum is 42.

The square root of 27979413 is about 5289.5569757778. The cubic root of 27979413 is about 303.5844572059.

The spelling of 27979413 in words is "twenty-seven million, nine hundred seventy-nine thousand, four hundred thirteen".