1209989483 has 4 divisors (see below), whose sum is σ = 1273673160. Its totient is φ = 1146305808.

The previous prime is 1209989477. The next prime is 1209989549. The reversal of 1209989483 is 3849899021.

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 1209989483 - 2²² = 1205795179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1209989413) 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, 31841810 + ... + 31841847.

It is an arithmetic number, because the mean of its divisors is an integer number (318418290).

Almost surely, 2^1209989483 is an apocalyptic number.

1209989483 is a deficient number, since it is larger than the sum of its proper divisors (63683677).

1209989483 is an equidigital number, since it uses as much as digits as its factorization.

1209989483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63683676.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 1209989483 is about 34784.9030902775. The cubic root of 1209989483 is about 1065.5991494467.

The spelling of 1209989483 in words is "one billion, two hundred nine million, nine hundred eighty-nine thousand, four hundred eighty-three".