8474391 has 6 divisors (see below), whose sum is σ = 12240800. Its totient is φ = 5649588.

The previous prime is 8474387. The next prime is 8474407. The reversal of 8474391 is 1934748.

It is a happy number.

8474391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8474391 - 2² = 8474387 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 (8474321) 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 5 ways as a sum of consecutive naturals, for example, 470791 + ... + 470808.

Almost surely, 2^8474391 is an apocalyptic number.

8474391 is a deficient number, since it is larger than the sum of its proper divisors (3766409).

8474391 is a wasteful number, since it uses less digits than its factorization.

8474391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941605 (or 941602 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8474391 is about 2911.0807271527. The cubic root of 8474391 is about 203.8775938106.

The spelling of 8474391 in words is "eight million, four hundred seventy-four thousand, three hundred ninety-one".