389917039 has 4 divisors (see below), whose sum is σ = 402495040. Its totient is φ = 377339040.

The previous prime is 389916997. The next prime is 389917043. The reversal of 389917039 is 930719983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389917039 - 2¹³ = 389908847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389916983 and 389917001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389917079) 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, 6288954 + ... + 6289015.

It is an arithmetic number, because the mean of its divisors is an integer number (100623760).

Almost surely, 2^389917039 is an apocalyptic number.

389917039 is a deficient number, since it is larger than the sum of its proper divisors (12578001).

389917039 is a wasteful number, since it uses less digits than its factorization.

389917039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12578000.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 389917039 is about 19746.3170996518. The cubic root of 389917039 is about 730.5625481789.

The spelling of 389917039 in words is "three hundred eighty-nine million, nine hundred seventeen thousand, thirty-nine".