8385779 has 4 divisors (see below), whose sum is σ = 8656320. Its totient is φ = 8115240.

The previous prime is 8385763. The next prime is 8385781. The reversal of 8385779 is 9775838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9775838 = 2 ⋅4887919.

It is a cyclic number.

It is not a de Polignac number, because 8385779 - 2⁴ = 8385763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8385719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135224 + ... + 135285.

It is an arithmetic number, because the mean of its divisors is an integer number (2164080).

Almost surely, 2^8385779 is an apocalyptic number.

8385779 is a deficient number, since it is larger than the sum of its proper divisors (270541).

8385779 is a wasteful number, since it uses less digits than its factorization.

8385779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270540.

The product of its digits is 423360, while the sum is 47.

The square root of 8385779 is about 2895.8209544100. The cubic root of 8385779 is about 203.1644909096.

The spelling of 8385779 in words is "eight million, three hundred eighty-five thousand, seven hundred seventy-nine".