1679959 has 2 divisors, whose sum is σ = 1679960. Its totient is φ = 1679958.

The previous prime is 1679939. The next prime is 1679963. The reversal of 1679959 is 9599761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1679959 - 2⁷ = 1679831 is a prime.

1679959 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679939) 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, 839979 + 839980.

It is an arithmetic number, because the mean of its divisors is an integer number (839980).

2^1679959 is an apocalyptic number.

1679959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679959 is an equidigital number, since it uses as much as digits as its factorization.

1679959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 46.

The square root of 1679959 is about 1296.1323234917. The cubic root of 1679959 is about 118.8774719807.

It can be divided in two parts, 1679 and 959, that multiplied together give a palindrome (1610161).

The spelling of 1679959 in words is "one million, six hundred seventy-nine thousand, nine hundred fifty-nine".