6472391 has 4 divisors (see below), whose sum is σ = 6554400. Its totient is φ = 6390384.

The previous prime is 6472387. The next prime is 6472421. The reversal of 6472391 is 1932746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1932746 = 2 ⋅966373.

It is a cyclic number.

It is not a de Polignac number, because 6472391 - 2² = 6472387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6472351) 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 in 3 ways as a sum of consecutive naturals, for example, 40886 + ... + 41043.

It is an arithmetic number, because the mean of its divisors is an integer number (1638600).

Almost surely, 2^6472391 is an apocalyptic number.

6472391 is a deficient number, since it is larger than the sum of its proper divisors (82009).

6472391 is an equidigital number, since it uses as much as digits as its factorization.

6472391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82008.

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

The square root of 6472391 is about 2544.0894245289. The cubic root of 6472391 is about 186.3609497639.

The spelling of 6472391 in words is "six million, four hundred seventy-two thousand, three hundred ninety-one".