1238966959 has 2 divisors, whose sum is σ = 1238966960. Its totient is φ = 1238966958.

The previous prime is 1238966957. The next prime is 1238966999. The reversal of 1238966959 is 9596698321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1238966959 - 2¹ = 1238966957 is a prime.

Together with 1238966957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238966957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619483479 + 619483480.

It is an arithmetic number, because the mean of its divisors is an integer number (619483480).

Almost surely, 2^1238966959 is an apocalyptic number.

1238966959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238966959 is an equidigital number, since it uses as much as digits as its factorization.

1238966959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 58.

The square root of 1238966959 is about 35198.9624705047. The cubic root of 1238966959 is about 1074.0386455629.

The spelling of 1238966959 in words is "one billion, two hundred thirty-eight million, nine hundred sixty-six thousand, nine hundred fifty-nine".