1039642369 has 2 divisors, whose sum is σ = 1039642370. Its totient is φ = 1039642368.

The previous prime is 1039642349. The next prime is 1039642379. The reversal of 1039642369 is 9632469301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 794563344 + 245079025 = 28188^2 + 15655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039642369 - 2⁹ = 1039641857 is a prime.

It is a super-2 number, since 2×1039642369² = 2161712510839864322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1039642339) 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, 519821184 + 519821185.

It is an arithmetic number, because the mean of its divisors is an integer number (519821185).

Almost surely, 2^1039642369 is an apocalyptic number.

It is an amenable number.

1039642369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039642369 is an equidigital number, since it uses as much as digits as its factorization.

1039642369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 1039642369 is about 32243.4856831578. The cubic root of 1039642369 is about 1013.0432567844.

The spelling of 1039642369 in words is "one billion, thirty-nine million, six hundred forty-two thousand, three hundred sixty-nine".