1039804993 has 12 divisors (see below), whose sum is σ = 1060593300. Its totient is φ = 1019375456.

The previous prime is 1039804981. The next prime is 1039805003. The reversal of 1039804993 is 3994089301.

It can be written as a sum of positive squares in 2 ways, for example, as 39790864 + 1000014129 = 6308^2 + 31623^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1039804993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1039804903) 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, 1025955 + ... + 1026967.

It is an arithmetic number, because the mean of its divisors is an integer number (88382775).

Almost surely, 2^1039804993 is an apocalyptic number.

It is an amenable number.

1039804993 is a deficient number, since it is larger than the sum of its proper divisors (20788307).

1039804993 is an equidigital number, since it uses as much as digits as its factorization.

1039804993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1039804993 is about 32246.0073962654. The cubic root of 1039804993 is about 1013.0960751260.

The spelling of 1039804993 in words is "one billion, thirty-nine million, eight hundred four thousand, nine hundred ninety-three".