13220039 has 8 divisors (see below), whose sum is σ = 15144960. Its totient is φ = 11304216.

The previous prime is 13220023. The next prime is 13220041. The reversal of 13220039 is 93002231.

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

It is not a de Polignac number, because 13220039 - 2⁴ = 13220023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13220039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220069) 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, 1202 + ... + 5280.

It is an arithmetic number, because the mean of its divisors is an integer number (1893120).

Almost surely, 2^13220039 is an apocalyptic number.

13220039 is a deficient number, since it is larger than the sum of its proper divisors (1924921).

13220039 is an equidigital number, since it uses as much as digits as its factorization.

13220039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 13220039 is about 3635.9371556725. The cubic root of 13220039 is about 236.4526825554.

The spelling of 13220039 in words is "thirteen million, two hundred twenty thousand, thirty-nine".