220011983 has 4 divisors (see below), whose sum is σ = 221469168. Its totient is φ = 218554800.

The previous prime is 220011973. The next prime is 220012007. The reversal of 220011983 is 389110022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220011983 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 (220011923) 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 3 ways as a sum of consecutive naturals, for example, 728366 + ... + 728667.

It is an arithmetic number, because the mean of its divisors is an integer number (55367292).

Almost surely, 2^220011983 is an apocalyptic number.

220011983 is a deficient number, since it is larger than the sum of its proper divisors (1457185).

220011983 is a wasteful number, since it uses less digits than its factorization.

220011983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457184.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 220011983 is about 14832.8009155385. The cubic root of 220011983 is about 603.6920339509.

The spelling of 220011983 in words is "two hundred twenty million, eleven thousand, nine hundred eighty-three".