220984379 has 16 divisors (see below), whose sum is σ = 285016320. Its totient is φ = 166256160.

The previous prime is 220984369. The next prime is 220984381. The reversal of 220984379 is 973489022.

It is not a de Polignac number, because 220984379 - 2⁸ = 220984123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220984319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47249 + ... + 51714.

It is an arithmetic number, because the mean of its divisors is an integer number (17813520).

Almost surely, 2^220984379 is an apocalyptic number.

220984379 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

220984379 is a deficient number, since it is larger than the sum of its proper divisors (64031941).

220984379 is a wasteful number, since it uses less digits than its factorization.

220984379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99010.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 220984379 is about 14865.5433469483. The cubic root of 220984379 is about 604.5801143659.

The spelling of 220984379 in words is "two hundred twenty million, nine hundred eighty-four thousand, three hundred seventy-nine".