13709849 has 4 divisors (see below), whose sum is σ = 14431440. Its totient is φ = 12988260.

The previous prime is 13709833. The next prime is 13709873. The reversal of 13709849 is 94890731.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 13709849 - 2⁴ = 13709833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13709809) 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, 360767 + ... + 360804.

It is an arithmetic number, because the mean of its divisors is an integer number (3607860).

Almost surely, 2^13709849 is an apocalyptic number.

13709849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13709849 is a deficient number, since it is larger than the sum of its proper divisors (721591).

13709849 is an equidigital number, since it uses as much as digits as its factorization.

13709849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721590.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 13709849 is about 3702.6813257422. The cubic root of 13709849 is about 239.3375772678.

The spelling of 13709849 in words is "thirteen million, seven hundred nine thousand, eight hundred forty-nine".