13480309 has 2 divisors, whose sum is σ = 13480310. Its totient is φ = 13480308.

The previous prime is 13480307. The next prime is 13480339. The reversal of 13480309 is 90308431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 2022084 = 3385^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 13480309 - 2¹ = 13480307 is a prime.

Together with 13480307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13480301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6740154 + 6740155.

It is an arithmetic number, because the mean of its divisors is an integer number (6740155).

Almost surely, 2^13480309 is an apocalyptic number.

It is an amenable number.

13480309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13480309 is an equidigital number, since it uses as much as digits as its factorization.

13480309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13480309 is about 3671.5540306524. The cubic root of 13480309 is about 237.9943328924.

The spelling of 13480309 in words is "thirteen million, four hundred eighty thousand, three hundred nine".