899220143 has 2 divisors, whose sum is σ = 899220144. Its totient is φ = 899220142.

The previous prime is 899220089. The next prime is 899220173. The reversal of 899220143 is 341022998.

899220143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 899220143 - 2⁸ = 899219887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 899220097 and 899220106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899220173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449610071 + 449610072.

It is an arithmetic number, because the mean of its divisors is an integer number (449610072).

Almost surely, 2^899220143 is an apocalyptic number.

899220143 is a deficient number, since it is larger than the sum of its proper divisors (1).

899220143 is an equidigital number, since it uses as much as digits as its factorization.

899220143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 899220143 is about 29986.9995664788. Note that the first 3 decimals coincide. The cubic root of 899220143 is about 965.2104359994.

The spelling of 899220143 in words is "eight hundred ninety-nine million, two hundred twenty thousand, one hundred forty-three".