6397041940 has 24 divisors (see below), whose sum is σ = 13654016712. Its totient is φ = 2516868480.

The previous prime is 6397041929. The next prime is 6397041941. The reversal of 6397041940 is 491407936.

It can be written as a sum of positive squares in 4 ways, for example, as 473584644 + 5923457296 = 21762^2 + 76964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397041941) 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, 2620519 + ... + 2622958.

It is an arithmetic number, because the mean of its divisors is an integer number (568917363).

Almost surely, 2^6397041940 is an apocalyptic number.

It is an amenable number.

6397041940 is an abundant number, since it is smaller than the sum of its proper divisors (7256974772).

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

6397041940 is a wasteful number, since it uses less digits than its factorization.

6397041940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243547 (or 5243545 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 6397041940 is about 79981.5099882467. The cubic root of 6397041940 is about 1856.3494456504.

The spelling of 6397041940 in words is "six billion, three hundred ninety-seven million, forty-one thousand, nine hundred forty".