1283457479 has 2 divisors, whose sum is σ = 1283457480. Its totient is φ = 1283457478.

The previous prime is 1283457419. The next prime is 1283457491. The reversal of 1283457479 is 9747543821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1283457479 - 2⁸ = 1283457223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283457419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641728739 + 641728740.

It is an arithmetic number, because the mean of its divisors is an integer number (641728740).

Almost surely, 2^1283457479 is an apocalyptic number.

1283457479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283457479 is an equidigital number, since it uses as much as digits as its factorization.

1283457479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The square root of 1283457479 is about 35825.3747921777. The cubic root of 1283457479 is about 1086.7437762642.

The spelling of 1283457479 in words is "one billion, two hundred eighty-three million, four hundred fifty-seven thousand, four hundred seventy-nine".