64253449 has 4 divisors (see below), whose sum is σ = 69196036. Its totient is φ = 59310864.

The previous prime is 64253443. The next prime is 64253549. The reversal of 64253449 is 94435246.

It is a happy number.

64253449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 50055625 = 3768^2 + 7075^2 .

It is a cyclic number.

It is not a de Polignac number, because 64253449 - 2¹³ = 64245257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64253443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471274 + ... + 2471299.

It is an arithmetic number, because the mean of its divisors is an integer number (17299009).

Almost surely, 2^64253449 is an apocalyptic number.

It is an amenable number.

64253449 is a deficient number, since it is larger than the sum of its proper divisors (4942587).

64253449 is a wasteful number, since it uses less digits than its factorization.

64253449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942586.

The product of its digits is 103680, while the sum is 37.

The square root of 64253449 is about 8015.8249107625. The cubic root of 64253449 is about 400.5273232699.

The spelling of 64253449 in words is "sixty-four million, two hundred fifty-three thousand, four hundred forty-nine".