2143440329 has 2 divisors, whose sum is σ = 2143440330. Its totient is φ = 2143440328.

The previous prime is 2143440287. The next prime is 2143440337. The reversal of 2143440329 is 9230443412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2014663225 + 128777104 = 44885^2 + 11348^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143440329 - 2⁸ = 2143440073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2143440295 and 2143440304.

It is not a weakly prime, because it can be changed into another prime (2143443329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071720164 + 1071720165.

It is an arithmetic number, because the mean of its divisors is an integer number (1071720165).

Almost surely, 2^2143440329 is an apocalyptic number.

It is an amenable number.

2143440329 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143440329 is an equidigital number, since it uses as much as digits as its factorization.

2143440329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2143440329 is about 46297.3036903878. The cubic root of 2143440329 is about 1289.3489351279.

The spelling of 2143440329 in words is "two billion, one hundred forty-three million, four hundred forty thousand, three hundred twenty-nine".