1979413 has 2 divisors, whose sum is σ = 1979414. Its totient is φ = 1979412.

The previous prime is 1979399. The next prime is 1979437. The reversal of 1979413 is 3149791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1787569 + 191844 = 1337^2 + 438^2 .

It is an emirp because it is prime and its reverse (3149791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1979413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989706 + 989707.

It is an arithmetic number, because the mean of its divisors is an integer number (989707).

2^1979413 is an apocalyptic number.

It is an amenable number.

1979413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979413 is an equidigital number, since it uses as much as digits as its factorization.

1979413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 34.

The square root of 1979413 is about 1406.9161311180. The cubic root of 1979413 is about 125.5583132445.

The spelling of 1979413 in words is "one million, nine hundred seventy-nine thousand, four hundred thirteen".