64269449 has 4 divisors (see below), whose sum is σ = 64654464. Its totient is φ = 63884436.

The previous prime is 64269437. The next prime is 64269487. The reversal of 64269449 is 94496246.

64269449 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64269449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64269949) 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, 192257 + ... + 192590.

It is an arithmetic number, because the mean of its divisors is an integer number (16163616).

Almost surely, 2^64269449 is an apocalyptic number.

It is an amenable number.

64269449 is a deficient number, since it is larger than the sum of its proper divisors (385015).

64269449 is a wasteful number, since it uses less digits than its factorization.

64269449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385014.

The product of its digits is 373248, while the sum is 44.

The square root of 64269449 is about 8016.8228744310. The cubic root of 64269449 is about 400.5605661304.

The spelling of 64269449 in words is "sixty-four million, two hundred sixty-nine thousand, four hundred forty-nine".