6466299438 has 16 divisors (see below), whose sum is σ = 12986264016. Its totient is φ = 2146488960.

The previous prime is 6466299421. The next prime is 6466299439. The reversal of 6466299438 is 8349926646.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466299439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234481 + ... + 2237372.

It is an arithmetic number, because the mean of its divisors is an integer number (811641501).

Almost surely, 2^6466299438 is an apocalyptic number.

6466299438 is an abundant number, since it is smaller than the sum of its proper divisors (6519964578).

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

6466299438 is a wasteful number, since it uses less digits than its factorization.

6466299438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472099.

The product of its digits is 13436928, while the sum is 57.

The square root of 6466299438 is about 80413.3038619854. The cubic root of 6466299438 is about 1863.0246619314.

The spelling of 6466299438 in words is "six billion, four hundred sixty-six million, two hundred ninety-nine thousand, four hundred thirty-eight".