389454917 has 2 divisors, whose sum is σ = 389454918. Its totient is φ = 389454916.

The previous prime is 389454907. The next prime is 389454959. The reversal of 389454917 is 719454983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334487521 + 54967396 = 18289^2 + 7414^2 .

It is a cyclic number.

It is not a de Polignac number, because 389454917 - 2¹⁰ = 389453893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389454907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194727458 + 194727459.

It is an arithmetic number, because the mean of its divisors is an integer number (194727459).

Almost surely, 2^389454917 is an apocalyptic number.

It is an amenable number.

389454917 is a deficient number, since it is larger than the sum of its proper divisors (1).

389454917 is an equidigital number, since it uses as much as digits as its factorization.

389454917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 389454917 is about 19734.6121573240. The cubic root of 389454917 is about 730.2738179655.

The spelling of 389454917 in words is "three hundred eighty-nine million, four hundred fifty-four thousand, nine hundred seventeen".