6406584438 has 16 divisors (see below), whose sum is σ = 12820893696. Its totient is φ = 2134240680.

The previous prime is 6406584433. The next prime is 6406584467. The reversal of 6406584438 is 8344856046.

It is a super-2 number, since 2×6406584438² = 82088648322447551688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406584433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311058 + ... + 331013.

It is an arithmetic number, because the mean of its divisors is an integer number (801305856).

Almost surely, 2^6406584438 is an apocalyptic number.

6406584438 is an abundant number, since it is smaller than the sum of its proper divisors (6414309258).

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

6406584438 is a wasteful number, since it uses less digits than its factorization.

6406584438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643739.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The square root of 6406584438 is about 80041.1421582676. The cubic root of 6406584438 is about 1857.2720288384.

The spelling of 6406584438 in words is "six billion, four hundred six million, five hundred eighty-four thousand, four hundred thirty-eight".