1147213709 has 2 divisors, whose sum is σ = 1147213710. Its totient is φ = 1147213708.

The previous prime is 1147213699. The next prime is 1147213783. The reversal of 1147213709 is 9073127411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1146025609 + 1188100 = 33853^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147213709 - 2⁴ = 1147213693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147213789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573606854 + 573606855.

It is an arithmetic number, because the mean of its divisors is an integer number (573606855).

Almost surely, 2^1147213709 is an apocalyptic number.

It is an amenable number.

1147213709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147213709 is an equidigital number, since it uses as much as digits as its factorization.

1147213709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1147213709 is about 33870.5433821189. The cubic root of 1147213709 is about 1046.8427332495.

The spelling of 1147213709 in words is "one billion, one hundred forty-seven million, two hundred thirteen thousand, seven hundred nine".