7966389959 has 4 divisors (see below), whose sum is σ = 8690607240. Its totient is φ = 7242172680.

The previous prime is 7966389919. The next prime is 7966389979. The reversal of 7966389959 is 9599836697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7966389959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7966389892 and 7966389901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966389919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362108624 + ... + 362108645.

It is an arithmetic number, because the mean of its divisors is an integer number (2172651810).

Almost surely, 2^7966389959 is an apocalyptic number.

7966389959 is a deficient number, since it is larger than the sum of its proper divisors (724217281).

7966389959 is a wasteful number, since it uses less digits than its factorization.

7966389959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724217280.

The product of its digits is 198404640, while the sum is 71.

The square root of 7966389959 is about 89254.6355042695. The cubic root of 7966389959 is about 1997.1952317262.

The spelling of 7966389959 in words is "seven billion, nine hundred sixty-six million, three hundred eighty-nine thousand, nine hundred fifty-nine".