1220983 has 2 divisors, whose sum is σ = 1220984. Its totient is φ = 1220982.

The previous prime is 1220981. The next prime is 1220993. The reversal of 1220983 is 3890221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220983 - 2¹ = 1220981 is a prime.

Together with 1220981, it forms a pair of twin primes.

It is equal to p₉₄₄₁₇ and since 1220983 and 94417 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220981) 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 as a sum of consecutive naturals, namely, 610491 + 610492.

It is an arithmetic number, because the mean of its divisors is an integer number (610492).

2^1220983 is an apocalyptic number.

1220983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220983 is an equidigital number, since it uses as much as digits as its factorization.

1220983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1220983 is about 1104.9809953117. The cubic root of 1220983 is about 106.8816638003.

The spelling of 1220983 in words is "one million, two hundred twenty thousand, nine hundred eighty-three".