8490779 has 4 divisors (see below), whose sum is σ = 9262680. Its totient is φ = 7718880.

The previous prime is 8490763. The next prime is 8490787. The reversal of 8490779 is 9770948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8490779 - 2⁴ = 8490763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8490799) 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 3 ways as a sum of consecutive naturals, for example, 385934 + ... + 385955.

It is an arithmetic number, because the mean of its divisors is an integer number (2315670).

Almost surely, 2^8490779 is an apocalyptic number.

8490779 is a deficient number, since it is larger than the sum of its proper divisors (771901).

8490779 is a wasteful number, since it uses less digits than its factorization.

8490779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771900.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 8490779 is about 2913.8941298544. The cubic root of 8490779 is about 204.0089304690.

The spelling of 8490779 in words is "eight million, four hundred ninety thousand, seven hundred seventy-nine".