6472139 has 2 divisors, whose sum is σ = 6472140. Its totient is φ = 6472138.

The previous prime is 6472111. The next prime is 6472157. The reversal of 6472139 is 9312746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6472139 - 2²⁰ = 5423563 is a prime.

It is not a weakly prime, because it can be changed into another prime (6472159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3236069 + 3236070.

It is an arithmetic number, because the mean of its divisors is an integer number (3236070).

Almost surely, 2^6472139 is an apocalyptic number.

6472139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6472139 is an equidigital number, since it uses as much as digits as its factorization.

6472139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 6472139 is about 2544.0398974859. The cubic root of 6472139 is about 186.3585311024.

The spelling of 6472139 in words is "six million, four hundred seventy-two thousand, one hundred thirty-nine".