8929391 has 2 divisors, whose sum is σ = 8929392. Its totient is φ = 8929390.

The previous prime is 8929381. The next prime is 8929399. The reversal of 8929391 is 1939298.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8929391 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8³ + 9² + 2²³ + 9⁴ + 3⁷ + 9⁶ + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8929399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4464695 + 4464696.

It is an arithmetic number, because the mean of its divisors is an integer number (4464696).

Almost surely, 2^8929391 is an apocalyptic number.

8929391 is a deficient number, since it is larger than the sum of its proper divisors (1).

8929391 is an equidigital number, since it uses as much as digits as its factorization.

8929391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 8929391 is about 2988.2086607197. The cubic root of 8929391 is about 207.4629807671.

The spelling of 8929391 in words is "eight million, nine hundred twenty-nine thousand, three hundred ninety-one".