1047771269 has 2 divisors, whose sum is σ = 1047771270. Its totient is φ = 1047771268.

The previous prime is 1047771191. The next prime is 1047771271. The reversal of 1047771269 is 9621777401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 700396225 + 347375044 = 26465^2 + 18638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047771269 - 2²⁰ = 1046722693 is a prime.

It is a super-2 number, since 2×1047771269² = 2195649264283740722, which contains 22 as substring.

Together with 1047771271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047771289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523885634 + 523885635.

It is an arithmetic number, because the mean of its divisors is an integer number (523885635).

Almost surely, 2^1047771269 is an apocalyptic number.

It is an amenable number.

1047771269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047771269 is an equidigital number, since it uses as much as digits as its factorization.

1047771269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 1047771269 is about 32369.2951576027. The cubic root of 1047771269 is about 1015.6767127771.

The spelling of 1047771269 in words is "one billion, forty-seven million, seven hundred seventy-one thousand, two hundred sixty-nine".