1039329985 has 16 divisors (see below), whose sum is σ = 1304715600. Its totient is φ = 793762816.

The previous prime is 1039329971. The next prime is 1039329989. The reversal of 1039329985 is 5899239301.

It can be written as a sum of positive squares in 8 ways, for example, as 65141041 + 974188944 = 8071^2 + 31212^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039329985 - 2⁵ = 1039329953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1039329989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27364 + ... + 53173.

It is an arithmetic number, because the mean of its divisors is an integer number (81544725).

Almost surely, 2^1039329985 is an apocalyptic number.

It is an amenable number.

1039329985 is a deficient number, since it is larger than the sum of its proper divisors (265385615).

1039329985 is an equidigital number, since it uses as much as digits as its factorization.

1039329985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80660.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 1039329985 is about 32238.6411779405. The cubic root of 1039329985 is about 1012.9417827214.

The spelling of 1039329985 in words is "one billion, thirty-nine million, three hundred twenty-nine thousand, nine hundred eighty-five".