1979594 has 4 divisors (see below), whose sum is σ = 2969394. Its totient is φ = 989796.

The previous prime is 1979581. The next prime is 1979609. The reversal of 1979594 is 4959791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4959791 = 131 ⋅37861.

It can be written as a sum of positive squares in only one way, i.e., 1809025 + 170569 = 1345^2 + 413^2 .

It is an unprimeable number.

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, 494897 + ... + 494900.

2^1979594 is an apocalyptic number.

1979594 is a deficient number, since it is larger than the sum of its proper divisors (989800).

1979594 is an equidigital number, since it uses as much as digits as its factorization.

1979594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989799.

The product of its digits is 102060, while the sum is 44.

The square root of 1979594 is about 1406.9804547328. The cubic root of 1979594 is about 125.5621401976.

The spelling of 1979594 in words is "one million, nine hundred seventy-nine thousand, five hundred ninety-four".