6439464 has 48 divisors (see below), whose sum is σ = 18469620. Its totient is φ = 2019840.

The previous prime is 6439451. The next prime is 6439469. The reversal of 6439464 is 4649346.

6439464 is a `hidden beast` number, since 643 + 9 + 4 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 476100 = 2442^2 + 690^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (6439469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1407 + ... + 3854.

Almost surely, 2^6439464 is an apocalyptic number.

It is an amenable number.

6439464 is an abundant number, since it is smaller than the sum of its proper divisors (12030156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6439464 is a wasteful number, since it uses less digits than its factorization.

6439464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5283 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6439464 is about 2537.6098990980. The cubic root of 6439464 is about 186.0443876027.

It can be divided in two parts, 6439 and 464, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 6439464 in words is "six million, four hundred thirty-nine thousand, four hundred sixty-four".