13395649 has 2 divisors, whose sum is σ = 13395650. Its totient is φ = 13395648.

The previous prime is 13395631. The next prime is 13395653. The reversal of 13395649 is 94659331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 49 = 3660^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 13395649 - 2⁵ = 13395617 is a prime.

It is a super-3 number, since 3×13395649³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13395659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6697824 + 6697825.

It is an arithmetic number, because the mean of its divisors is an integer number (6697825).

Almost surely, 2^13395649 is an apocalyptic number.

It is an amenable number.

13395649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13395649 is an equidigital number, since it uses as much as digits as its factorization.

13395649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 13395649 is about 3660.0066939829. The cubic root of 13395649 is about 237.4950632400.

It can be divided in two parts, 133956 and 49, that multiplied together give a square (6563844 = 2562²).

The spelling of 13395649 in words is "thirteen million, three hundred ninety-five thousand, six hundred forty-nine".