143708969 has 2 divisors, whose sum is σ = 143708970. Its totient is φ = 143708968.

The previous prime is 143708953. The next prime is 143708987. The reversal of 143708969 is 969807341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125731369 + 17977600 = 11213^2 + 4240^2 .

It is a cyclic number.

It is not a de Polignac number, because 143708969 - 2⁴ = 143708953 is a prime.

It is a super-2 number, since 2×143708969² = 41304535542085922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143708909) 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, 71854484 + 71854485.

It is an arithmetic number, because the mean of its divisors is an integer number (71854485).

Almost surely, 2^143708969 is an apocalyptic number.

It is an amenable number.

143708969 is a deficient number, since it is larger than the sum of its proper divisors (1).

143708969 is an equidigital number, since it uses as much as digits as its factorization.

143708969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 143708969 is about 11987.8675751778. The cubic root of 143708969 is about 523.7949309734.

The spelling of 143708969 in words is "one hundred forty-three million, seven hundred eight thousand, nine hundred sixty-nine".