1283039983 has 4 divisors (see below), whose sum is σ = 1283773648. Its totient is φ = 1282306320.

The previous prime is 1283039969. The next prime is 1283040041. The reversal of 1283039983 is 3899303821.

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 1283039983 - 2²⁵ = 1249485551 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 (1283039183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364203 + ... + 367708.

It is an arithmetic number, because the mean of its divisors is an integer number (320943412).

Almost surely, 2^1283039983 is an apocalyptic number.

1283039983 is a deficient number, since it is larger than the sum of its proper divisors (733665).

1283039983 is an equidigital number, since it uses as much as digits as its factorization.

1283039983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733664.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 1283039983 is about 35819.5474985377. The cubic root of 1283039983 is about 1086.6259278244.

The spelling of 1283039983 in words is "one billion, two hundred eighty-three million, thirty-nine thousand, nine hundred eighty-three".