7945039 has 2 divisors, whose sum is σ = 7945040. Its totient is φ = 7945038.

The previous prime is 7945037. The next prime is 7945057. The reversal of 7945039 is 9305497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7945039 - 2¹ = 7945037 is a prime.

Together with 7945037, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7944989 and 7945007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7945031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972519 + 3972520.

It is an arithmetic number, because the mean of its divisors is an integer number (3972520).

Almost surely, 2^7945039 is an apocalyptic number.

7945039 is a deficient number, since it is larger than the sum of its proper divisors (1).

7945039 is an equidigital number, since it uses as much as digits as its factorization.

7945039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 7945039 is about 2818.6945559957. The cubic root of 7945039 is about 199.5409387869.

The spelling of 7945039 in words is "seven million, nine hundred forty-five thousand, thirty-nine".