1283797247 has 2 divisors, whose sum is σ = 1283797248. Its totient is φ = 1283797246.

The previous prime is 1283797213. The next prime is 1283797331. The reversal of 1283797247 is 7427973821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1283797247 - 2¹⁸ = 1283535103 is a prime.

It is a super-3 number, since 3×1283797247³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1283797195 and 1283797204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283797447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641898623 + 641898624.

It is an arithmetic number, because the mean of its divisors is an integer number (641898624).

Almost surely, 2^1283797247 is an apocalyptic number.

1283797247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283797247 is an equidigital number, since it uses as much as digits as its factorization.

1283797247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The square root of 1283797247 is about 35830.1164804135. The cubic root of 1283797247 is about 1086.8396652171.

The spelling of 1283797247 in words is "one billion, two hundred eighty-three million, seven hundred ninety-seven thousand, two hundred forty-seven".