1979875 has 16 divisors (see below), whose sum is σ = 2530944. Its totient is φ = 1545600.

The previous prime is 1979827. The next prime is 1979891. The reversal of 1979875 is 5789791.

It is not a de Polignac number, because 1979875 - 2¹¹ = 1977827 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5707 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (158184).

2^1979875 is an apocalyptic number.

1979875 is a deficient number, since it is larger than the sum of its proper divisors (551069).

1979875 is an equidigital number, since it uses as much as digits as its factorization.

1979875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 389 counting only the distinct ones).

The product of its digits is 158760, while the sum is 46.

The square root of 1979875 is about 1407.0803104301. The cubic root of 1979875 is about 125.5680810272.

The spelling of 1979875 in words is "one million, nine hundred seventy-nine thousand, eight hundred seventy-five".