389475799 has 2 divisors, whose sum is σ = 389475800. Its totient is φ = 389475798.

The previous prime is 389475791. The next prime is 389475803. The reversal of 389475799 is 997574983.

It is a strong prime.

It is an emirp because it is prime and its reverse (997574983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389475799 - 2³ = 389475791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389475791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194737899 + 194737900.

It is an arithmetic number, because the mean of its divisors is an integer number (194737900).

Almost surely, 2^389475799 is an apocalyptic number.

389475799 is a deficient number, since it is larger than the sum of its proper divisors (1).

389475799 is an equidigital number, since it uses as much as digits as its factorization.

389475799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 61.

The square root of 389475799 is about 19735.1412206754. The cubic root of 389475799 is about 730.2868698017.

The spelling of 389475799 in words is "three hundred eighty-nine million, four hundred seventy-five thousand, seven hundred ninety-nine".