389934293 has 4 divisors (see below), whose sum is σ = 445639200. Its totient is φ = 334229388.

The previous prime is 389934289. The next prime is 389934299. The reversal of 389934293 is 392439983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392439983 = 13 ⋅30187691.

It is a cyclic number.

It is not a de Polignac number, because 389934293 - 2² = 389934289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389934299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27852443 + ... + 27852456.

It is an arithmetic number, because the mean of its divisors is an integer number (111409800).

Almost surely, 2^389934293 is an apocalyptic number.

It is an amenable number.

389934293 is a deficient number, since it is larger than the sum of its proper divisors (55704907).

389934293 is an equidigital number, since it uses as much as digits as its factorization.

389934293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55704906.

The product of its digits is 1259712, while the sum is 50.

The square root of 389934293 is about 19746.7539864151. The cubic root of 389934293 is about 730.5733239243.

The spelling of 389934293 in words is "three hundred eighty-nine million, nine hundred thirty-four thousand, two hundred ninety-three".