1039869009 has 15 divisors (see below), whose sum is σ = 1553818233. Its totient is φ = 693052524.

The previous prime is 1039869007. The next prime is 1039869059. The reversal of 1039869009 is 9009689301.

The square root of 1039869009 is 32247.

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

It is not a de Polignac number, because 1039869009 - 2¹ = 1039869007 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1039869001) 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, 288432 + ... + 292014.

Almost surely, 2^1039869009 is an apocalyptic number.

1039869009 is the 32247-th square number.

1039869009 is the 16124-th centered octagonal number.

It is an amenable number.

1039869009 is a deficient number, since it is larger than the sum of its proper divisors (513949224).

1039869009 is an frugal number, since it uses more digits than its factorization.

1039869009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The cubic root of 1039869009 is about 1013.1168652510.

Multiplying 1039869009 by its product of nonzero digits (104976), we get a square (109161289088784 = 10448028²).

The spelling of 1039869009 in words is "one billion, thirty-nine million, eight hundred sixty-nine thousand, nine".