1228963959 has 12 divisors (see below), whose sum is σ = 1775840352. Its totient is φ = 819000000.

The previous prime is 1228963933. The next prime is 1228963963. The reversal of 1228963959 is 9593698221.

It is a happy number.

It is not a de Polignac number, because 1228963959 - 2⁷ = 1228963831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228963259) 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 in 11 ways as a sum of consecutive naturals, for example, 834 + ... + 49584.

It is an arithmetic number, because the mean of its divisors is an integer number (147986696).

Almost surely, 2^1228963959 is an apocalyptic number.

1228963959 is a deficient number, since it is larger than the sum of its proper divisors (546876393).

1228963959 is a wasteful number, since it uses less digits than its factorization.

1228963959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51558 (or 51555 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 1228963959 is about 35056.5822492724. The cubic root of 1228963959 is about 1071.1403567095.

The spelling of 1228963959 in words is "one billion, two hundred twenty-eight million, nine hundred sixty-three thousand, nine hundred fifty-nine".