220079477 has 4 divisors (see below), whose sum is σ = 220127340. Its totient is φ = 220031616.

The previous prime is 220079471. The next prime is 220079537. The reversal of 220079477 is 774970022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774970022 = 2 ⋅387485011.

It can be written as a sum of positive squares in 2 ways, for example, as 93876721 + 126202756 = 9689^2 + 11234^2 .

It is a cyclic number.

It is not a de Polignac number, because 220079477 - 2²⁶ = 152970613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220079477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220079471) 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, 16202 + ... + 26507.

It is an arithmetic number, because the mean of its divisors is an integer number (55031835).

Almost surely, 2^220079477 is an apocalyptic number.

It is an amenable number.

220079477 is a deficient number, since it is larger than the sum of its proper divisors (47863).

220079477 is an equidigital number, since it uses as much as digits as its factorization.

220079477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47862.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 220079477 is about 14835.0759013899. The cubic root of 220079477 is about 603.7537600196.

The spelling of 220079477 in words is "two hundred twenty million, seventy-nine thousand, four hundred seventy-seven".