1979141 has 2 divisors, whose sum is σ = 1979142. Its totient is φ = 1979140.

The previous prime is 1979129. The next prime is 1979143. The reversal of 1979141 is 1419791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1256641 + 722500 = 1121^2 + 850^2 .

It is an emirp because it is prime and its reverse (1419791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1979141 - 2⁶ = 1979077 is a prime.

Together with 1979143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1979098 and 1979107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979143) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989570 + 989571.

It is an arithmetic number, because the mean of its divisors is an integer number (989571).

2^1979141 is an apocalyptic number.

It is an amenable number.

1979141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979141 is an equidigital number, since it uses as much as digits as its factorization.

1979141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 32.

The square root of 1979141 is about 1406.8194624756. The cubic root of 1979141 is about 125.5525618045.

The spelling of 1979141 in words is "one million, nine hundred seventy-nine thousand, one hundred forty-one".