1979123 has 8 divisors (see below), whose sum is σ = 2140992. Its totient is φ = 1822336.

The previous prime is 1979119. The next prime is 1979129. The reversal of 1979123 is 3219791.

It is a happy number.

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 1979123 - 2² = 1979119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1979123.

It is not an unprimeable number, because it can be changed into a prime (1979129) 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, 440 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (267624).

2^1979123 is an apocalyptic number.

1979123 is a deficient number, since it is larger than the sum of its proper divisors (161869).

1979123 is a wasteful number, since it uses less digits than its factorization.

1979123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541.

The product of its digits is 3402, while the sum is 32.

The square root of 1979123 is about 1406.8130650516. The cubic root of 1979123 is about 125.5521811759.

The spelling of 1979123 in words is "one million, nine hundred seventy-nine thousand, one hundred twenty-three".