13139849 has 8 divisors (see below), whose sum is σ = 13878240. Its totient is φ = 12406176.

The previous prime is 13139821. The next prime is 13139851. The reversal of 13139849 is 94893131.

13139849 = T₄₂₂ + T₄₂₃ + ... + T₅₃₅.

It is a happy number.

13139849 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13139849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13139879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5597 + ... + 7589.

It is an arithmetic number, because the mean of its divisors is an integer number (1734780).

Almost surely, 2^13139849 is an apocalyptic number.

13139849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13139849 is a deficient number, since it is larger than the sum of its proper divisors (738391).

13139849 is a wasteful number, since it uses less digits than its factorization.

13139849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its digits is 23328, while the sum is 38.

The square root of 13139849 is about 3624.8929639370. The cubic root of 13139849 is about 235.9736217286.

The spelling of 13139849 in words is "thirteen million, one hundred thirty-nine thousand, eight hundred forty-nine".