1224431959 has 2 divisors, whose sum is σ = 1224431960. Its totient is φ = 1224431958.

The previous prime is 1224431947. The next prime is 1224431963. The reversal of 1224431959 is 9591344221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1224431959 - 2¹¹ = 1224429911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224431909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612215979 + 612215980.

It is an arithmetic number, because the mean of its divisors is an integer number (612215980).

Almost surely, 2^1224431959 is an apocalyptic number.

1224431959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224431959 is an equidigital number, since it uses as much as digits as its factorization.

1224431959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 1224431959 is about 34991.8841876227. The cubic root of 1224431959 is about 1069.8220681218.

The spelling of 1224431959 in words is "one billion, two hundred twenty-four million, four hundred thirty-one thousand, nine hundred fifty-nine".