1980959 has 8 divisors (see below), whose sum is σ = 2208240. Its totient is φ = 1766016.

The previous prime is 1980949. The next prime is 1980983. The reversal of 1980959 is 9590891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1980959 - 2⁸ = 1980703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2744 + ... + 3389.

It is an arithmetic number, because the mean of its divisors is an integer number (276030).

2^1980959 is an apocalyptic number.

1980959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1980959 is a deficient number, since it is larger than the sum of its proper divisors (227281).

1980959 is a wasteful number, since it uses less digits than its factorization.

1980959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 1980959 is about 1407.4654525067. The cubic root of 1980959 is about 125.5909934107.

The spelling of 1980959 in words is "one million, nine hundred eighty thousand, nine hundred fifty-nine".