389199397 has 2 divisors, whose sum is σ = 389199398. Its totient is φ = 389199396.

The previous prime is 389199289. The next prime is 389199409. The reversal of 389199397 is 793991983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206381956 + 182817441 = 14366^2 + 13521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389199397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389199697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194599698 + 194599699.

It is an arithmetic number, because the mean of its divisors is an integer number (194599699).

Almost surely, 2^389199397 is an apocalyptic number.

It is an amenable number.

389199397 is a deficient number, since it is larger than the sum of its proper divisors (1).

389199397 is an equidigital number, since it uses as much as digits as its factorization.

389199397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 58.

The square root of 389199397 is about 19728.1371903178. The cubic root of 389199397 is about 730.1140729973.

The spelling of 389199397 in words is "three hundred eighty-nine million, one hundred ninety-nine thousand, three hundred ninety-seven".