1144464869 has 2 divisors, whose sum is σ = 1144464870. Its totient is φ = 1144464868.

The previous prime is 1144464817. The next prime is 1144464877. The reversal of 1144464869 is 9684644411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 880012225 + 264452644 = 29665^2 + 16262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144464869 is a prime.

It is a super-2 number, since 2×1144464869² = 2619599672750374322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144464569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572232434 + 572232435.

It is an arithmetic number, because the mean of its divisors is an integer number (572232435).

Almost surely, 2^1144464869 is an apocalyptic number.

It is an amenable number.

1144464869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144464869 is an equidigital number, since it uses as much as digits as its factorization.

1144464869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 47.

The square root of 1144464869 is about 33829.9404226493. The cubic root of 1144464869 is about 1046.0059508891.

The spelling of 1144464869 in words is "one billion, one hundred forty-four million, four hundred sixty-four thousand, eight hundred sixty-nine".