13535869 has 2 divisors, whose sum is σ = 13535870. Its totient is φ = 13535868.

The previous prime is 13535857. The next prime is 13535897. The reversal of 13535869 is 96853531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6827769 + 6708100 = 2613^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 13535869 - 2⁷ = 13535741 is a prime.

It is a super-2 number, since 2×13535869² = 366439499170322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13535069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6767934 + 6767935.

It is an arithmetic number, because the mean of its divisors is an integer number (6767935).

Almost surely, 2^13535869 is an apocalyptic number.

It is an amenable number.

13535869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13535869 is an equidigital number, since it uses as much as digits as its factorization.

13535869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 13535869 is about 3679.1125288580. The cubic root of 13535869 is about 238.3208545909.

The spelling of 13535869 in words is "thirteen million, five hundred thirty-five thousand, eight hundred sixty-nine".