13729451 has 4 divisors (see below), whose sum is σ = 13764432. Its totient is φ = 13694472.

The previous prime is 13729433. The next prime is 13729481. The reversal of 13729451 is 15492731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13729451 - 2¹⁰ = 13728427 is a prime.

It is a super-2 number, since 2×13729451² = 376995649522802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13729411) 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, 16895 + ... + 17688.

It is an arithmetic number, because the mean of its divisors is an integer number (3441108).

Almost surely, 2^13729451 is an apocalyptic number.

13729451 is a deficient number, since it is larger than the sum of its proper divisors (34981).

13729451 is an equidigital number, since it uses as much as digits as its factorization.

13729451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34980.

The product of its digits is 7560, while the sum is 32.

The square root of 13729451 is about 3705.3273809476. The cubic root of 13729451 is about 239.4515892465.

The spelling of 13729451 in words is "thirteen million, seven hundred twenty-nine thousand, four hundred fifty-one".