1039642379 has 2 divisors, whose sum is σ = 1039642380. Its totient is φ = 1039642378.

The previous prime is 1039642369. The next prime is 1039642403. The reversal of 1039642379 is 9732469301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1039642379 - 2²⁸ = 771206923 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1039642339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519821189 + 519821190.

It is an arithmetic number, because the mean of its divisors is an integer number (519821190).

Almost surely, 2^1039642379 is an apocalyptic number.

1039642379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039642379 is an equidigital number, since it uses as much as digits as its factorization.

1039642379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 1039642379 is about 32243.4858382279. The cubic root of 1039642379 is about 1013.0432600324.

The spelling of 1039642379 in words is "one billion, thirty-nine million, six hundred forty-two thousand, three hundred seventy-nine".