1039493639 has 2 divisors, whose sum is σ = 1039493640. Its totient is φ = 1039493638.

The previous prime is 1039493621. The next prime is 1039493641. The reversal of 1039493639 is 9363949301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1039493639 - 2⁸ = 1039493383 is a prime.

It is a Sophie Germain prime.

Together with 1039493641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1039493593 and 1039493602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039493669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519746819 + 519746820.

It is an arithmetic number, because the mean of its divisors is an integer number (519746820).

Almost surely, 2^1039493639 is an apocalyptic number.

1039493639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039493639 is an equidigital number, since it uses as much as digits as its factorization.

1039493639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 47.

The square root of 1039493639 is about 32241.1792433217. The cubic root of 1039493639 is about 1012.9949462263.

The spelling of 1039493639 in words is "one billion, thirty-nine million, four hundred ninety-three thousand, six hundred thirty-nine".