13529969 has 2 divisors, whose sum is σ = 13529970. Its totient is φ = 13529968.

The previous prime is 13529963. The next prime is 13529987. The reversal of 13529969 is 96992531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11992369 + 1537600 = 3463^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 13529969 - 2¹⁶ = 13464433 is a prime.

It is a super-2 number, since 2×13529969² = 366120122281922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13529963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6764984 + 6764985.

It is an arithmetic number, because the mean of its divisors is an integer number (6764985).

Almost surely, 2^13529969 is an apocalyptic number.

It is an amenable number.

13529969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13529969 is an equidigital number, since it uses as much as digits as its factorization.

13529969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 44.

The square root of 13529969 is about 3678.3106176613. The cubic root of 13529969 is about 238.2862232129.

The spelling of 13529969 in words is "thirteen million, five hundred twenty-nine thousand, nine hundred sixty-nine".