13340939 has 4 divisors (see below), whose sum is σ = 13357680. Its totient is φ = 13324200.

The previous prime is 13340933. The next prime is 13340941. The reversal of 13340939 is 93904331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93904331 = 23 ⋅4082797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13340939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13340933) 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 3 ways as a sum of consecutive naturals, for example, 7112 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (3339420).

Almost surely, 2^13340939 is an apocalyptic number.

13340939 is a deficient number, since it is larger than the sum of its proper divisors (16741).

13340939 is an equidigital number, since it uses as much as digits as its factorization.

13340939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 13340939 is about 3652.5250170259. The cubic root of 13340939 is about 237.1712993038.

The spelling of 13340939 in words is "thirteen million, three hundred forty thousand, nine hundred thirty-nine".