6989959 has 2 divisors, whose sum is σ = 6989960. Its totient is φ = 6989958.

The previous prime is 6989947. The next prime is 6989963. The reversal of 6989959 is 9599896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6989959 - 2¹⁹ = 6465671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6989459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494979 + 3494980.

It is an arithmetic number, because the mean of its divisors is an integer number (3494980).

Almost surely, 2^6989959 is an apocalyptic number.

6989959 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989959 is an equidigital number, since it uses as much as digits as its factorization.

6989959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 55.

The square root of 6989959 is about 2643.8530594570. The cubic root of 6989959 is about 191.2016090707.

The spelling of 6989959 in words is "six million, nine hundred eighty-nine thousand, nine hundred fifty-nine".