8540479 has 2 divisors, whose sum is σ = 8540480. Its totient is φ = 8540478.

The previous prime is 8540461. The next prime is 8540501. The reversal of 8540479 is 9740458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8540479 - 2¹⁵ = 8507711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8540179) 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, 4270239 + 4270240.

It is an arithmetic number, because the mean of its divisors is an integer number (4270240).

Almost surely, 2^8540479 is an apocalyptic number.

8540479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540479 is an equidigital number, since it uses as much as digits as its factorization.

8540479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 8540479 is about 2922.4097933041. The cubic root of 8540479 is about 204.4062055553.

The spelling of 8540479 in words is "eight million, five hundred forty thousand, four hundred seventy-nine".