143008993 has 2 divisors, whose sum is σ = 143008994. Its totient is φ = 143008992.

The previous prime is 143008973. The next prime is 143009003. The reversal of 143008993 is 399800341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101445184 + 41563809 = 10072^2 + 6447^2 .

It is a cyclic number.

It is not a de Polignac number, because 143008993 - 2⁵ = 143008961 is a prime.

It is not a weakly prime, because it can be changed into another prime (143008903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71504496 + 71504497.

It is an arithmetic number, because the mean of its divisors is an integer number (71504497).

Almost surely, 2^143008993 is an apocalyptic number.

It is an amenable number.

143008993 is a deficient number, since it is larger than the sum of its proper divisors (1).

143008993 is an equidigital number, since it uses as much as digits as its factorization.

143008993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 143008993 is about 11958.6367534096. The cubic root of 143008993 is about 522.9431150177.

The spelling of 143008993 in words is "one hundred forty-three million, eight thousand, nine hundred ninety-three".