13172947 has 8 divisors (see below), whose sum is σ = 13899600. Its totient is φ = 12449664.

The previous prime is 13172927. The next prime is 13172953. The reversal of 13172947 is 74927131.

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 13172947 - 2¹⁹ = 12648659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172927) 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, 14943 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (1737450).

Almost surely, 2^13172947 is an apocalyptic number.

13172947 is a deficient number, since it is larger than the sum of its proper divisors (726653).

13172947 is an equidigital number, since it uses as much as digits as its factorization.

13172947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685.

The product of its digits is 10584, while the sum is 34.

The square root of 13172947 is about 3629.4554687997. The cubic root of 13172947 is about 236.1715871272.

The spelling of 13172947 in words is "thirteen million, one hundred seventy-two thousand, nine hundred forty-seven".