1283493479 has 4 divisors (see below), whose sum is σ = 1314798240. Its totient is φ = 1252188720.

The previous prime is 1283493469. The next prime is 1283493499. The reversal of 1283493479 is 9743943821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9743943821 = 37 ⋅263349833.

It is a cyclic number.

It is not a de Polignac number, because 1283493479 - 2²⁰ = 1282444903 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 (1283493469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15652319 + ... + 15652400.

It is an arithmetic number, because the mean of its divisors is an integer number (328699560).

Almost surely, 2^1283493479 is an apocalyptic number.

1283493479 is a deficient number, since it is larger than the sum of its proper divisors (31304761).

1283493479 is an equidigital number, since it uses as much as digits as its factorization.

1283493479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31304760.

The product of its digits is 1306368, while the sum is 50.

The square root of 1283493479 is about 35825.8772258266. The cubic root of 1283493479 is about 1086.7539369463.

The spelling of 1283493479 in words is "one billion, two hundred eighty-three million, four hundred ninety-three thousand, four hundred seventy-nine".