8418493 has 2 divisors, whose sum is σ = 8418494. Its totient is φ = 8418492.

The previous prime is 8418481. The next prime is 8418503. The reversal of 8418493 is 3948148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5189284 + 3229209 = 2278^2 + 1797^2 .

It is a cyclic number.

It is not a de Polignac number, because 8418493 - 2¹³ = 8410301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8418413) 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, 4209246 + 4209247.

It is an arithmetic number, because the mean of its divisors is an integer number (4209247).

Almost surely, 2^8418493 is an apocalyptic number.

It is an amenable number.

8418493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8418493 is an equidigital number, since it uses as much as digits as its factorization.

8418493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 8418493 is about 2901.4639408409. The cubic root of 8418493 is about 203.4283383557.

It can be divided in two parts, 8418 and 493, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8418493 in words is "eight million, four hundred eighteen thousand, four hundred ninety-three".