13709081 has 4 divisors (see below), whose sum is σ = 14305152. Its totient is φ = 13113012.

The previous prime is 13709057. The next prime is 13709117. The reversal of 13709081 is 18090731.

13709081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 18090731 = 1741 ⋅10391.

It is a cyclic number.

It is not a de Polignac number, because 13709081 - 2²² = 9514777 is a prime.

It is a super-3 number, since 3×13709081³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13709011) 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, 298001 + ... + 298046.

It is an arithmetic number, because the mean of its divisors is an integer number (3576288).

Almost surely, 2^13709081 is an apocalyptic number.

It is an amenable number.

13709081 is a deficient number, since it is larger than the sum of its proper divisors (596071).

13709081 is an equidigital number, since it uses as much as digits as its factorization.

13709081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596070.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 13709081 is about 3702.5776156618. The cubic root of 13709081 is about 239.3331081038. Note that the first 3 decimals are identical.

The spelling of 13709081 in words is "thirteen million, seven hundred nine thousand, eighty-one".