141997789 has 2 divisors, whose sum is σ = 141997790. Its totient is φ = 141997788.

The previous prime is 141997777. The next prime is 141997829. The reversal of 141997789 is 987799141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141205689 + 792100 = 11883^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 141997789 - 2²¹ = 139900637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141997729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70998894 + 70998895.

It is an arithmetic number, because the mean of its divisors is an integer number (70998895).

Almost surely, 2^141997789 is an apocalyptic number.

It is an amenable number.

141997789 is a deficient number, since it is larger than the sum of its proper divisors (1).

141997789 is an equidigital number, since it uses as much as digits as its factorization.

141997789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 55.

The square root of 141997789 is about 11916.2825159527. The cubic root of 141997789 is about 521.7076368634.

The spelling of 141997789 in words is "one hundred forty-one million, nine hundred ninety-seven thousand, seven hundred eighty-nine".