19955029 has 2 divisors, whose sum is σ = 19955030. Its totient is φ = 19955028.

The previous prime is 19954981. The next prime is 19955057. The reversal of 19955029 is 92055991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18722929 + 1232100 = 4327^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 19955029 - 2¹¹ = 19952981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19954982 and 19955000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19955729) 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, 9977514 + 9977515.

It is an arithmetic number, because the mean of its divisors is an integer number (9977515).

Almost surely, 2^19955029 is an apocalyptic number.

It is an amenable number.

19955029 is a deficient number, since it is larger than the sum of its proper divisors (1).

19955029 is an equidigital number, since it uses as much as digits as its factorization.

19955029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 19955029 is about 4467.1052147896. The cubic root of 19955029 is about 271.2381588551.

The spelling of 19955029 in words is "nineteen million, nine hundred fifty-five thousand, twenty-nine".