13729473 has 8 divisors (see below), whose sum is σ = 20340000. Its totient is φ = 9152964.

The previous prime is 13729433. The next prime is 13729481. The reversal of 13729473 is 37492731.

It is not a de Polignac number, because 13729473 - 2¹⁷ = 13598401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13729423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254223 + ... + 254276.

It is an arithmetic number, because the mean of its divisors is an integer number (2542500).

Almost surely, 2^13729473 is an apocalyptic number.

It is an amenable number.

13729473 is a deficient number, since it is larger than the sum of its proper divisors (6610527).

13729473 is an equidigital number, since it uses as much as digits as its factorization.

13729473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508508 (or 508502 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 13729473 is about 3705.3303496450. The cubic root of 13729473 is about 239.4517171451.

The spelling of 13729473 in words is "thirteen million, seven hundred twenty-nine thousand, four hundred seventy-three".