27129379 has 8 divisors (see below), whose sum is σ = 27483120. Its totient is φ = 26777856.

The previous prime is 27129373. The next prime is 27129383. The reversal of 27129379 is 97392172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27129379 - 2⁹ = 27128867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27129373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45924 + ... + 46510.

It is an arithmetic number, because the mean of its divisors is an integer number (3435390).

Almost surely, 2^27129379 is an apocalyptic number.

27129379 is a deficient number, since it is larger than the sum of its proper divisors (353741).

27129379 is a wasteful number, since it uses less digits than its factorization.

27129379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109.

The product of its digits is 47628, while the sum is 40.

The square root of 27129379 is about 5208.5870444872. The cubic root of 27129379 is about 300.4784181296.

The spelling of 27129379 in words is "twenty-seven million, one hundred twenty-nine thousand, three hundred seventy-nine".