1039409609 has 12 divisors (see below), whose sum is σ = 1210933764. Its totient is φ = 889578144.

The previous prime is 1039409603. The next prime is 1039409617. The reversal of 1039409609 is 9069049301.

It can be written as a sum of positive squares in 2 ways, for example, as 1036840000 + 2569609 = 32200^2 + 1603^2 .

It is not a de Polignac number, because 1039409609 - 2²⁴ = 1022632393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039409603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17507 + ... + 48839.

It is an arithmetic number, because the mean of its divisors is an integer number (100911147).

Almost surely, 2^1039409609 is an apocalyptic number.

It is an amenable number.

1039409609 is a deficient number, since it is larger than the sum of its proper divisors (171524155).

1039409609 is an equidigital number, since it uses as much as digits as its factorization.

1039409609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32024 (or 32017 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1039409609 is about 32239.8760698611. The cubic root of 1039409609 is about 1012.9676495196.

The spelling of 1039409609 in words is "one billion, thirty-nine million, four hundred nine thousand, six hundred nine".