27172439 has 8 divisors (see below), whose sum is σ = 31715328. Its totient is φ = 22794840.

The previous prime is 27172433. The next prime is 27172441. The reversal of 27172439 is 93427172.

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 27172439 - 2⁴ = 27172423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27172399 and 27172408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27172433) 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, 40967 + ... + 41624.

It is an arithmetic number, because the mean of its divisors is an integer number (3964416).

Almost surely, 2^27172439 is an apocalyptic number.

27172439 is a deficient number, since it is larger than the sum of its proper divisors (4542889).

27172439 is an equidigital number, since it uses as much as digits as its factorization.

27172439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82645.

The product of its digits is 21168, while the sum is 35.

The square root of 27172439 is about 5212.7189642259. The cubic root of 27172439 is about 300.6373081321.

The spelling of 27172439 in words is "twenty-seven million, one hundred seventy-two thousand, four hundred thirty-nine".