383540429 has 2 divisors, whose sum is σ = 383540430. Its totient is φ = 383540428.

The previous prime is 383540411. The next prime is 383540431. The reversal of 383540429 is 924045383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337273225 + 46267204 = 18365^2 + 6802^2 .

It is a cyclic number.

It is not a de Polignac number, because 383540429 - 2²⁰ = 382491853 is a prime.

Together with 383540431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 383540392 and 383540401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383540459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191770214 + 191770215.

It is an arithmetic number, because the mean of its divisors is an integer number (191770215).

Almost surely, 2^383540429 is an apocalyptic number.

It is an amenable number.

383540429 is a deficient number, since it is larger than the sum of its proper divisors (1).

383540429 is an equidigital number, since it uses as much as digits as its factorization.

383540429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 383540429 is about 19584.1882394957. The cubic root of 383540429 is about 726.5581575158.

The spelling of 383540429 in words is "three hundred eighty-three million, five hundred forty thousand, four hundred twenty-nine".