1247959 has 2 divisors, whose sum is σ = 1247960. Its totient is φ = 1247958.

The previous prime is 1247951. The next prime is 1247969. The reversal of 1247959 is 9597421.

It is a weak prime.

It is an emirp because it is prime and its reverse (9597421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1247959 - 2³ = 1247951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623979 + 623980.

It is an arithmetic number, because the mean of its divisors is an integer number (623980).

2^1247959 is an apocalyptic number.

1247959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247959 is an equidigital number, since it uses as much as digits as its factorization.

1247959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 1247959 is about 1117.1208529072. The cubic root of 1247959 is about 107.6630732133.

The spelling of 1247959 in words is "one million, two hundred forty-seven thousand, nine hundred fifty-nine".