220472839 has 4 divisors (see below), whose sum is σ = 222613456. Its totient is φ = 218332224.

The previous prime is 220472743. The next prime is 220472843. The reversal of 220472839 is 938274022.

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 220472839 - 2⁹ = 220472327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220472798 and 220472807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220472039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070154 + ... + 1070359.

It is an arithmetic number, because the mean of its divisors is an integer number (55653364).

Almost surely, 2^220472839 is an apocalyptic number.

220472839 is a deficient number, since it is larger than the sum of its proper divisors (2140617).

220472839 is a wasteful number, since it uses less digits than its factorization.

220472839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140616.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 220472839 is about 14848.3278183100. The cubic root of 220472839 is about 604.1132550441.

The spelling of 220472839 in words is "two hundred twenty million, four hundred seventy-two thousand, eight hundred thirty-nine".