389424079 has 4 divisors (see below), whose sum is σ = 424826280. Its totient is φ = 354021880.

The previous prime is 389424073. The next prime is 389424089. The reversal of 389424079 is 970424983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970424983 = 11 ⋅88220453.

It is a cyclic number.

It is not a de Polignac number, because 389424079 - 2¹⁷ = 389293007 is a prime.

It is a super-2 number, since 2×389424079² = 303302226609996482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389424073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17701084 + ... + 17701105.

It is an arithmetic number, because the mean of its divisors is an integer number (106206570).

Almost surely, 2^389424079 is an apocalyptic number.

389424079 is a deficient number, since it is larger than the sum of its proper divisors (35402201).

389424079 is a wasteful number, since it uses less digits than its factorization.

389424079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35402200.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 389424079 is about 19733.8308242470. The cubic root of 389424079 is about 730.2545424966.

The spelling of 389424079 in words is "three hundred eighty-nine million, four hundred twenty-four thousand, seventy-nine".