13670849 has 4 divisors (see below), whose sum is σ = 13721940. Its totient is φ = 13619760.

The previous prime is 13670827. The next prime is 13670851. The reversal of 13670849 is 94807631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94807631 = 59 ⋅1606909.

It can be written as a sum of positive squares in 2 ways, for example, as 7756225 + 5914624 = 2785^2 + 2432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13670849 is a prime.

It is a super-2 number, since 2×13670849² = 373784224761602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13670879) 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, 25142 + ... + 25679.

It is an arithmetic number, because the mean of its divisors is an integer number (3430485).

Almost surely, 2^13670849 is an apocalyptic number.

It is an amenable number.

13670849 is a deficient number, since it is larger than the sum of its proper divisors (51091).

13670849 is an equidigital number, since it uses as much as digits as its factorization.

13670849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51090.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13670849 is about 3697.4111213118. The cubic root of 13670849 is about 239.1104162344.

The spelling of 13670849 in words is "thirteen million, six hundred seventy thousand, eight hundred forty-nine".