143946697 has 2 divisors, whose sum is σ = 143946698. Its totient is φ = 143946696.

The previous prime is 143946659. The next prime is 143946703. The reversal of 143946697 is 796649341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128391561 + 15555136 = 11331^2 + 3944^2 .

It is a cyclic number.

It is not a de Polignac number, because 143946697 - 2²³ = 135558089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143946697.

It is not a weakly prime, because it can be changed into another prime (143946617) 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, 71973348 + 71973349.

It is an arithmetic number, because the mean of its divisors is an integer number (71973349).

Almost surely, 2^143946697 is an apocalyptic number.

It is an amenable number.

143946697 is a deficient number, since it is larger than the sum of its proper divisors (1).

143946697 is an equidigital number, since it uses as much as digits as its factorization.

143946697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The square root of 143946697 is about 11997.7788361013. The cubic root of 143946697 is about 524.0835979999.

The spelling of 143946697 in words is "one hundred forty-three million, nine hundred forty-six thousand, six hundred ninety-seven".