143924993 has 2 divisors, whose sum is σ = 143924994. Its totient is φ = 143924992.

The previous prime is 143924987. The next prime is 143925031. The reversal of 143924993 is 399429341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131974144 + 11950849 = 11488^2 + 3457^2 .

It is an emirp because it is prime and its reverse (399429341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143924993 - 2⁶ = 143924929 is a prime.

It is a super-2 number, since 2×143924993² = 41428807220100098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143924903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71962496 + 71962497.

It is an arithmetic number, because the mean of its divisors is an integer number (71962497).

Almost surely, 2^143924993 is an apocalyptic number.

It is an amenable number.

143924993 is a deficient number, since it is larger than the sum of its proper divisors (1).

143924993 is an equidigital number, since it uses as much as digits as its factorization.

143924993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 143924993 is about 11996.8743012503. The cubic root of 143924993 is about 524.0572565778.

The spelling of 143924993 in words is "one hundred forty-three million, nine hundred twenty-four thousand, nine hundred ninety-three".