6472839949 has 2 divisors, whose sum is σ = 6472839950. Its totient is φ = 6472839948.

The previous prime is 6472839931. The next prime is 6472839979. The reversal of 6472839949 is 9499382746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5866794025 + 606045924 = 76595^2 + 24618^2 .

It is a cyclic number.

It is not a de Polignac number, because 6472839949 - 2²¹ = 6470742797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6472839979) 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 as a sum of consecutive naturals, namely, 3236419974 + 3236419975.

It is an arithmetic number, because the mean of its divisors is an integer number (3236419975).

Almost surely, 2^6472839949 is an apocalyptic number.

It is an amenable number.

6472839949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6472839949 is an equidigital number, since it uses as much as digits as its factorization.

6472839949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 61.

The square root of 6472839949 is about 80453.9616737423. The cubic root of 6472839949 is about 1863.6525855938.

The spelling of 6472839949 in words is "six billion, four hundred seventy-two million, eight hundred thirty-nine thousand, nine hundred forty-nine".