1979111 has 4 divisors (see below), whose sum is σ = 2027424. Its totient is φ = 1930800.

The previous prime is 1979101. The next prime is 1979119. The reversal of 1979111 is 1119791.

1979111 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1119791 = 227 ⋅4933.

It is a cyclic number.

It is not a de Polignac number, because 1979111 - 2¹⁰ = 1978087 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 (1979119) 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 3 ways as a sum of consecutive naturals, for example, 24095 + ... + 24176.

It is an arithmetic number, because the mean of its divisors is an integer number (506856).

2^1979111 is an apocalyptic number.

1979111 is a deficient number, since it is larger than the sum of its proper divisors (48313).

1979111 is an equidigital number, since it uses as much as digits as its factorization.

1979111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48312.

The product of its digits is 567, while the sum is 29.

The square root of 1979111 is about 1406.8088000862. The cubic root of 1979111 is about 125.5519274222.

The spelling of 1979111 in words is "one million, nine hundred seventy-nine thousand, one hundred eleven".