32809913 has 2 divisors, whose sum is σ = 32809914. Its totient is φ = 32809912.

The previous prime is 32809897. The next prime is 32809921. The reversal of 32809913 is 31990823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28761769 + 4048144 = 5363^2 + 2012^2 .

It is an emirp because it is prime and its reverse (31990823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32809913 - 2⁴ = 32809897 is a prime.

It is not a weakly prime, because it can be changed into another prime (32809213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16404956 + 16404957.

It is an arithmetic number, because the mean of its divisors is an integer number (16404957).

Almost surely, 2^32809913 is an apocalyptic number.

It is an amenable number.

32809913 is a deficient number, since it is larger than the sum of its proper divisors (1).

32809913 is an equidigital number, since it uses as much as digits as its factorization.

32809913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 32809913 is about 5727.9938023709. The cubic root of 32809913 is about 320.1363774174.

The spelling of 32809913 in words is "thirty-two million, eight hundred nine thousand, nine hundred thirteen".