847880479 has 4 divisors (see below), whose sum is σ = 848249680. Its totient is φ = 847511280.

The previous prime is 847880437. The next prime is 847880497. The reversal of 847880479 is 974088748.

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 847880479 - 2¹⁷ = 847749407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847889479) 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, 181134 + ... + 185755.

It is an arithmetic number, because the mean of its divisors is an integer number (212062420).

Almost surely, 2^847880479 is an apocalyptic number.

847880479 is a deficient number, since it is larger than the sum of its proper divisors (369201).

847880479 is a wasteful number, since it uses less digits than its factorization.

847880479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369200.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 847880479 is about 29118.3873008105. The cubic root of 847880479 is about 946.4802269694.

The spelling of 847880479 in words is "eight hundred forty-seven million, eight hundred eighty thousand, four hundred seventy-nine".