872144629 has 2 divisors, whose sum is σ = 872144630. Its totient is φ = 872144628.

The previous prime is 872144563. The next prime is 872144639. The reversal of 872144629 is 926441278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613899729 + 258244900 = 24777^2 + 16070^2 .

It is a cyclic number.

It is not a de Polignac number, because 872144629 - 2²³ = 863756021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872144639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436072314 + 436072315.

It is an arithmetic number, because the mean of its divisors is an integer number (436072315).

Almost surely, 2^872144629 is an apocalyptic number.

It is an amenable number.

872144629 is a deficient number, since it is larger than the sum of its proper divisors (1).

872144629 is an equidigital number, since it uses as much as digits as its factorization.

872144629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 872144629 is about 29532.0948969083. The cubic root of 872144629 is about 955.4240522422.

The spelling of 872144629 in words is "eight hundred seventy-two million, one hundred forty-four thousand, six hundred twenty-nine".