1283143399 has 4 divisors (see below), whose sum is σ = 1284042760. Its totient is φ = 1282244040.

The previous prime is 1283143373. The next prime is 1283143417. The reversal of 1283143399 is 9933413821.

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 1283143399 - 2¹³ = 1283135207 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 (1283143319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447537 + ... + 450394.

It is an arithmetic number, because the mean of its divisors is an integer number (321010690).

Almost surely, 2^1283143399 is an apocalyptic number.

1283143399 is a deficient number, since it is larger than the sum of its proper divisors (899361).

1283143399 is an equidigital number, since it uses as much as digits as its factorization.

1283143399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899360.

The product of its digits is 139968, while the sum is 43.

The square root of 1283143399 is about 35820.9910387750. The cubic root of 1283143399 is about 1086.6551218972.

The spelling of 1283143399 in words is "one billion, two hundred eighty-three million, one hundred forty-three thousand, three hundred ninety-nine".