1225846439 has 2 divisors, whose sum is σ = 1225846440. Its totient is φ = 1225846438.

The previous prime is 1225846417. The next prime is 1225846471. The reversal of 1225846439 is 9346485221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225846439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225846439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225846639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612923219 + 612923220.

It is an arithmetic number, because the mean of its divisors is an integer number (612923220).

Almost surely, 2^1225846439 is an apocalyptic number.

1225846439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225846439 is an equidigital number, since it uses as much as digits as its factorization.

1225846439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 1225846439 is about 35012.0898976339. The cubic root of 1225846439 is about 1070.2338671267.

The spelling of 1225846439 in words is "one billion, two hundred twenty-five million, eight hundred forty-six thousand, four hundred thirty-nine".