8491396 has 27 divisors (see below), whose sum is σ = 15688407. Its totient is φ = 4021320.

The previous prime is 8491391. The next prime is 8491409. The reversal of 8491396 is 6931948.

The square root of 8491396 is 2914.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8491391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 180645 + ... + 180691.

Almost surely, 2^8491396 is an apocalyptic number.

8491396 is the 2914-th square number.

It is an amenable number.

8491396 is a deficient number, since it is larger than the sum of its proper divisors (7197011).

8491396 is a wasteful number, since it uses less digits than its factorization.

8491396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 80 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The cubic root of 8491396 is about 204.0138719261.

Multiplying 8491396 by its product of digits (46656), we get a square (396174571776 = 629424²).

The spelling of 8491396 in words is "eight million, four hundred ninety-one thousand, three hundred ninety-six".