6464449 has 4 divisors (see below), whose sum is σ = 6745536. Its totient is φ = 6183364.

The previous prime is 6464431. The next prime is 6464483. The reversal of 6464449 is 9444646.

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 not a de Polignac number, because 6464449 - 2¹⁵ = 6431681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6464849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140509 + ... + 140554.

It is an arithmetic number, because the mean of its divisors is an integer number (1686384).

Almost surely, 2^6464449 is an apocalyptic number.

It is an amenable number.

6464449 is a deficient number, since it is larger than the sum of its proper divisors (281087).

6464449 is a wasteful number, since it uses less digits than its factorization.

6464449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281086.

The product of its digits is 82944, while the sum is 37.

The square root of 6464449 is about 2542.5280726080. The cubic root of 6464449 is about 186.2846933255.

The spelling of 6464449 in words is "six million, four hundred sixty-four thousand, four hundred forty-nine".