8780479 has 4 divisors (see below), whose sum is σ = 8787976. Its totient is φ = 8772984.

The previous prime is 8780459. The next prime is 8780509. The reversal of 8780479 is 9740878.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8780479 - 2¹¹ = 8778431 is a prime.

It is a super-2 number, since 2×8780479² = 154193622938882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8780419) 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, 1569 + ... + 4474.

It is an arithmetic number, because the mean of its divisors is an integer number (2196994).

Almost surely, 2^8780479 is an apocalyptic number.

8780479 is a deficient number, since it is larger than the sum of its proper divisors (7497).

8780479 is a wasteful number, since it uses less digits than its factorization.

8780479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 8780479 is about 2963.1873042385. The cubic root of 8780479 is about 206.3032499177.

The spelling of 8780479 in words is "eight million, seven hundred eighty thousand, four hundred seventy-nine".