1049072309 has 2 divisors, whose sum is σ = 1049072310. Its totient is φ = 1049072308.

The previous prime is 1049072279. The next prime is 1049072347. The reversal of 1049072309 is 9032709401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 633931684 + 415140625 = 25178^2 + 20375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049072309 - 2¹⁶ = 1049006773 is a prime.

It is a super-2 number, since 2×1049072309² = 2201105419021182962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1049072009) 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, 524536154 + 524536155.

It is an arithmetic number, because the mean of its divisors is an integer number (524536155).

Almost surely, 2^1049072309 is an apocalyptic number.

It is an amenable number.

1049072309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049072309 is an equidigital number, since it uses as much as digits as its factorization.

1049072309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1049072309 is about 32389.3857459508. The cubic root of 1049072309 is about 1016.0969347265.

The spelling of 1049072309 in words is "one billion, forty-nine million, seventy-two thousand, three hundred nine".