13729874 has 4 divisors (see below), whose sum is σ = 20594814. Its totient is φ = 6864936.

The previous prime is 13729867. The next prime is 13729883. The reversal of 13729874 is 47892731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47892731 = 577 ⋅83003.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 6466849 = 2695^2 + 2543^2 .

It is a super-3 number, since 3×13729874³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432467 + ... + 3432470.

Almost surely, 2^13729874 is an apocalyptic number.

13729874 is a deficient number, since it is larger than the sum of its proper divisors (6864940).

13729874 is an equidigital number, since it uses as much as digits as its factorization.

13729874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864939.

The product of its digits is 84672, while the sum is 41.

The square root of 13729874 is about 3705.3844604845. The cubic root of 13729874 is about 239.4540483636.

The spelling of 13729874 in words is "thirteen million, seven hundred twenty-nine thousand, eight hundred seventy-four".