389028079 has 4 divisors (see below), whose sum is σ = 424394280. Its totient is φ = 353661880.

The previous prime is 389028067. The next prime is 389028091. The reversal of 389028079 is 970820983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970820983 = 11 ⋅88256453.

It is an interprime number because it is at equal distance from previous prime (389028067) and next prime (389028091).

It is not a de Polignac number, because 389028079 - 2²⁷ = 254810351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389028019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17683084 + ... + 17683105.

It is an arithmetic number, because the mean of its divisors is an integer number (106098570).

Almost surely, 2^389028079 is an apocalyptic number.

389028079 is a deficient number, since it is larger than the sum of its proper divisors (35366201).

389028079 is a wasteful number, since it uses less digits than its factorization.

389028079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35366200.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 389028079 is about 19723.7947413777. The cubic root of 389028079 is about 730.0069299398.

The spelling of 389028079 in words is "three hundred eighty-nine million, twenty-eight thousand, seventy-nine".