389829449 has 2 divisors, whose sum is σ = 389829450. Its totient is φ = 389829448.

The previous prime is 389829367. The next prime is 389829457. The reversal of 389829449 is 944928983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370293049 + 19536400 = 19243^2 + 4420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389829449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389829394 and 389829403.

It is not a weakly prime, because it can be changed into another prime (389829149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194914724 + 194914725.

It is an arithmetic number, because the mean of its divisors is an integer number (194914725).

Almost surely, 2^389829449 is an apocalyptic number.

It is an amenable number.

389829449 is a deficient number, since it is larger than the sum of its proper divisors (1).

389829449 is an equidigital number, since it uses as much as digits as its factorization.

389829449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 56.

The square root of 389829449 is about 19744.0990931468. The cubic root of 389829449 is about 730.5078401604.

The spelling of 389829449 in words is "three hundred eighty-nine million, eight hundred twenty-nine thousand, four hundred forty-nine".