13389991 has 8 divisors (see below), whose sum is σ = 13731840. Its totient is φ = 13052088.

The previous prime is 13389953. The next prime is 13389997. The reversal of 13389991 is 19998331.

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

It is a cyclic number.

It is not a de Polignac number, because 13389991 - 2¹¹ = 13387943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13389997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6600 + ... + 8386.

It is an arithmetic number, because the mean of its divisors is an integer number (1716480).

Almost surely, 2^13389991 is an apocalyptic number.

13389991 is a deficient number, since it is larger than the sum of its proper divisors (341849).

13389991 is a wasteful number, since it uses less digits than its factorization.

13389991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

The product of its digits is 52488, while the sum is 43.

The square root of 13389991 is about 3659.2336629409. The cubic root of 13389991 is about 237.4616211300.

The spelling of 13389991 in words is "thirteen million, three hundred eighty-nine thousand, nine hundred ninety-one".