1039945321 has 2 divisors, whose sum is σ = 1039945322. Its totient is φ = 1039945320.

The previous prime is 1039945241. The next prime is 1039945327. The reversal of 1039945321 is 1235499301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018886400 + 21058921 = 31920^2 + 4589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1039945321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1039945327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519972660 + 519972661.

It is an arithmetic number, because the mean of its divisors is an integer number (519972661).

Almost surely, 2^1039945321 is an apocalyptic number.

It is an amenable number.

1039945321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039945321 is an equidigital number, since it uses as much as digits as its factorization.

1039945321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1039945321 is about 32248.1832201444. The cubic root of 1039945321 is about 1013.1416475657.

The spelling of 1039945321 in words is "one billion, thirty-nine million, nine hundred forty-five thousand, three hundred twenty-one".