7975739 has 2 divisors, whose sum is σ = 7975740. Its totient is φ = 7975738.

The previous prime is 7975717. The next prime is 7975741. The reversal of 7975739 is 9375797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7975739 - 2⁸ = 7975483 is a prime.

It is a super-2 number, since 2×7975739² = 127224825192242, which contains 22 as substring.

Together with 7975741, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7975693 and 7975702.

It is not a weakly prime, because it can be changed into another prime (7975039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3987869 + 3987870.

It is an arithmetic number, because the mean of its divisors is an integer number (3987870).

Almost surely, 2^7975739 is an apocalyptic number.

7975739 is a deficient number, since it is larger than the sum of its proper divisors (1).

7975739 is an equidigital number, since it uses as much as digits as its factorization.

7975739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 416745, while the sum is 47.

The square root of 7975739 is about 2824.1350888369. The cubic root of 7975739 is about 199.7976202813.

The spelling of 7975739 in words is "seven million, nine hundred seventy-five thousand, seven hundred thirty-nine".