143863897 has 2 divisors, whose sum is σ = 143863898. Its totient is φ = 143863896.

The previous prime is 143863883. The next prime is 143863903. The reversal of 143863897 is 798368341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129868816 + 13995081 = 11396^2 + 3741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143863897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143863897.

It is not a weakly prime, because it can be changed into another prime (143863847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71931948 + 71931949.

It is an arithmetic number, because the mean of its divisors is an integer number (71931949).

Almost surely, 2^143863897 is an apocalyptic number.

It is an amenable number.

143863897 is a deficient number, since it is larger than the sum of its proper divisors (1).

143863897 is an equidigital number, since it uses as much as digits as its factorization.

143863897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 143863897 is about 11994.3277010427. The cubic root of 143863897 is about 523.9830921744.

The spelling of 143863897 in words is "one hundred forty-three million, eight hundred sixty-three thousand, eight hundred ninety-seven".