143684369 has 2 divisors, whose sum is σ = 143684370. Its totient is φ = 143684368.

The previous prime is 143684363. The next prime is 143684393. The reversal of 143684369 is 963486341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121264144 + 22420225 = 11012^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 143684369 - 2²⁴ = 126907153 is a prime.

It is a super-2 number, since 2×143684369² = 41290395789856322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143684363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71842184 + 71842185.

It is an arithmetic number, because the mean of its divisors is an integer number (71842185).

Almost surely, 2^143684369 is an apocalyptic number.

It is an amenable number.

143684369 is a deficient number, since it is larger than the sum of its proper divisors (1).

143684369 is an equidigital number, since it uses as much as digits as its factorization.

143684369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 143684369 is about 11986.8414939049. The cubic root of 143684369 is about 523.7650416522.

Multiplying 143684369 by its sum of digits (44), we get a palindrome (6322112236).

The spelling of 143684369 in words is "one hundred forty-three million, six hundred eighty-four thousand, three hundred sixty-nine".