1979101 has 2 divisors, whose sum is σ = 1979102. Its totient is φ = 1979100.

The previous prime is 1979077. The next prime is 1979119. The reversal of 1979101 is 1019791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 527076 = 1205^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1979101 - 2⁵ = 1979069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979141) 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, 989550 + 989551.

It is an arithmetic number, because the mean of its divisors is an integer number (989551).

2^1979101 is an apocalyptic number.

It is an amenable number.

1979101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979101 is an equidigital number, since it uses as much as digits as its factorization.

1979101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 1979101 is about 1406.8052459385. The cubic root of 1979101 is about 125.5517159600.

It can be divided in two parts, 1979 and 101, that added together give a triangular number (2080 = T₆₄).

The spelling of 1979101 in words is "one million, nine hundred seventy-nine thousand, one hundred one".