6989835959 has 2 divisors, whose sum is σ = 6989835960. Its totient is φ = 6989835958.

The previous prime is 6989835943. The next prime is 6989835967. The reversal of 6989835959 is 9595389896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6989835959 - 2⁴ = 6989835943 is a prime.

It is a super-3 number, since 3×6989835959³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 6989835892 and 6989835901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6989835059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494917979 + 3494917980.

It is an arithmetic number, because the mean of its divisors is an integer number (3494917980).

Almost surely, 2^6989835959 is an apocalyptic number.

6989835959 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989835959 is an equidigital number, since it uses as much as digits as its factorization.

6989835959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188956800, while the sum is 71.

The square root of 6989835959 is about 83605.2388250880. The cubic root of 6989835959 is about 1912.0048718641.

The spelling of 6989835959 in words is "six billion, nine hundred eighty-nine million, eight hundred thirty-five thousand, nine hundred fifty-nine".