1071449289 has 15 divisors (see below), whose sum is σ = 1601000247. Its totient is φ = 714103128.

The previous prime is 1071449287. The next prime is 1071449299. The reversal of 1071449289 is 9829441701.

It is a happy number.

The square root of 1071449289 is 32733.

It is a perfect power (a square), and thus also a powerful number.

1071449289 is a `hidden beast` number, since 10 + 71 + 4 + 492 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 1042773264 = 5355^2 + 32292^2 .

It is not a de Polignac number, because 1071449289 - 2¹ = 1071449287 is a prime.

It is a super-2 number, since 2×1071449289² = 2296007157797211042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071449287) 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 in 14 ways as a sum of consecutive naturals, for example, 292779 + ... + 296415.

Almost surely, 2^1071449289 is an apocalyptic number.

1071449289 is the 32733-rd square number.

1071449289 is the 16367-th centered octagonal number.

It is an amenable number.

1071449289 is a deficient number, since it is larger than the sum of its proper divisors (529550958).

1071449289 is an frugal number, since it uses more digits than its factorization.

1071449289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7286 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The cubic root of 1071449289 is about 1023.2707034660.

The spelling of 1071449289 in words is "one billion, seventy-one million, four hundred forty-nine thousand, two hundred eighty-nine".