1979741 has 2 divisors, whose sum is σ = 1979742. Its totient is φ = 1979740.

The previous prime is 1979729. The next prime is 1979749. The reversal of 1979741 is 1479791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1331716 + 648025 = 1154^2 + 805^2 .

It is an emirp because it is prime and its reverse (1479791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1979695 and 1979704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979749) 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 as a sum of consecutive naturals, namely, 989870 + 989871.

It is an arithmetic number, because the mean of its divisors is an integer number (989871).

2^1979741 is an apocalyptic number.

It is an amenable number.

1979741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979741 is an equidigital number, since it uses as much as digits as its factorization.

1979741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 38.

The square root of 1979741 is about 1407.0326932947. The cubic root of 1979741 is about 125.5652481039.

The spelling of 1979741 in words is "one million, nine hundred seventy-nine thousand, seven hundred forty-one".