13729953 has 4 divisors (see below), whose sum is σ = 18306608. Its totient is φ = 9153300.

The previous prime is 13729927. The next prime is 13729973. The reversal of 13729953 is 35992731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35992731 = 3 ⋅11997577.

It is not a de Polignac number, because 13729953 - 2⁶ = 13729889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13729973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288323 + ... + 2288328.

It is an arithmetic number, because the mean of its divisors is an integer number (4576652).

Almost surely, 2^13729953 is an apocalyptic number.

It is an amenable number.

13729953 is a deficient number, since it is larger than the sum of its proper divisors (4576655).

13729953 is an equidigital number, since it uses as much as digits as its factorization.

13729953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4576654.

The product of its digits is 51030, while the sum is 39.

The square root of 13729953 is about 3705.3951206315. The cubic root of 13729953 is about 239.4545076257.

It can be divided in two parts, 1372 and 9953, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 13729953 in words is "thirteen million, seven hundred twenty-nine thousand, nine hundred fifty-three".