13533939 has 8 divisors (see below), whose sum is σ = 20050320. Its totient is φ = 9022608.

The previous prime is 13533929. The next prime is 13533973. The reversal of 13533939 is 93933531.

It is not a de Polignac number, because 13533939 - 2⁷ = 13533811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13533929) 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, 250602 + ... + 250655.

It is an arithmetic number, because the mean of its divisors is an integer number (2506290).

Almost surely, 2^13533939 is an apocalyptic number.

13533939 is a deficient number, since it is larger than the sum of its proper divisors (6516381).

13533939 is an equidigital number, since it uses as much as digits as its factorization.

13533939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501266 (or 501260 counting only the distinct ones).

The product of its digits is 32805, while the sum is 36.

The square root of 13533939 is about 3678.8502279924. The cubic root of 13533939 is about 238.3095271292.

The spelling of 13533939 in words is "thirteen million, five hundred thirty-three thousand, nine hundred thirty-nine".