1979039 has 2 divisors, whose sum is σ = 1979040. Its totient is φ = 1979038.

The previous prime is 1978997. The next prime is 1979051. The reversal of 1979039 is 9309791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1978993 and 1979011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989519 + 989520.

It is an arithmetic number, because the mean of its divisors is an integer number (989520).

2^1979039 is an apocalyptic number.

1979039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979039 is an equidigital number, since it uses as much as digits as its factorization.

1979039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1979039 is about 1406.7832100221. The cubic root of 1979039 is about 125.5504048786.

The spelling of 1979039 in words is "one million, nine hundred seventy-nine thousand, thirty-nine".