220347879 has 8 divisors (see below), whose sum is σ = 294428160. Its totient is φ = 146583096.

The previous prime is 220347877. The next prime is 220347917. The reversal of 220347879 is 978743022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220347879 - 2¹ = 220347877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220347879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220347877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77239 + ... + 80040.

It is an arithmetic number, because the mean of its divisors is an integer number (36803520).

Almost surely, 2^220347879 is an apocalyptic number.

220347879 is a deficient number, since it is larger than the sum of its proper divisors (74080281).

220347879 is a wasteful number, since it uses less digits than its factorization.

220347879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157749.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 220347879 is about 14844.1193406682. The cubic root of 220347879 is about 603.9991000016. Note that the first 3 decimals are identical.

The spelling of 220347879 in words is "two hundred twenty million, three hundred forty-seven thousand, eight hundred seventy-nine".