1979059349 has 4 divisors (see below), whose sum is σ = 1980719436. Its totient is φ = 1977399264.

The previous prime is 1979059339. The next prime is 1979059363. The reversal of 1979059349 is 9439509791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 377058724 + 1602000625 = 19418^2 + 40025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979059349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1979059294 and 1979059303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979059309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828254 + ... + 830639.

It is an arithmetic number, because the mean of its divisors is an integer number (495179859).

Almost surely, 2^1979059349 is an apocalyptic number.

It is an amenable number.

1979059349 is a deficient number, since it is larger than the sum of its proper divisors (1660087).

1979059349 is a wasteful number, since it uses less digits than its factorization.

1979059349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660086.

The product of its (nonzero) digits is 2755620, while the sum is 56.

The square root of 1979059349 is about 44486.6198873324. The cubic root of 1979059349 is about 1255.5083519121.

The spelling of 1979059349 in words is "one billion, nine hundred seventy-nine million, fifty-nine thousand, three hundred forty-nine".