6399464841 has 48 divisors (see below), whose sum is σ = 12131159040. Its totient is φ = 3149422560.

The previous prime is 6399464839. The next prime is 6399464843. The reversal of 6399464841 is 1484649936.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6399464839) and next prime (6399464843).

It is not a de Polignac number, because 6399464841 - 2¹ = 6399464839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6399464843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229845 + ... + 256178.

It is an arithmetic number, because the mean of its divisors is an integer number (252732480).

Almost surely, 2^6399464841 is an apocalyptic number.

It is an amenable number.

6399464841 is a deficient number, since it is larger than the sum of its proper divisors (5731694199).

6399464841 is a wasteful number, since it uses less digits than its factorization.

6399464841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486066 (or 486063 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 6399464841 is about 79996.6551863264. The cubic root of 6399464841 is about 1856.5837822518.

The spelling of 6399464841 in words is "six billion, three hundred ninety-nine million, four hundred sixty-four thousand, eight hundred forty-one".