8472779 has 4 divisors (see below), whose sum is σ = 9683184. Its totient is φ = 7262376.

The previous prime is 8472767. The next prime is 8472787. The reversal of 8472779 is 9772748.

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 8472779 - 2⁸ = 8472523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8472799) 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, 605192 + ... + 605205.

It is an arithmetic number, because the mean of its divisors is an integer number (2420796).

Almost surely, 2^8472779 is an apocalyptic number.

8472779 is a deficient number, since it is larger than the sum of its proper divisors (1210405).

8472779 is a wasteful number, since it uses less digits than its factorization.

8472779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210404.

The product of its digits is 197568, while the sum is 44.

The square root of 8472779 is about 2910.8038408660. The cubic root of 8472779 is about 203.8646657815.

The spelling of 8472779 in words is "eight million, four hundred seventy-two thousand, seven hundred seventy-nine".