10389639 has 8 divisors (see below), whose sum is σ = 14918512. Its totient is φ = 6393600.

The previous prime is 10389607. The next prime is 10389647. The reversal of 10389639 is 93698301.

10389639 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10389639 - 2⁵ = 10389607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 266401 = 10389639 / (1 + 0 + 3 + 8 + 9 + 6 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10389597 and 10389606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10389649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133162 + ... + 133239.

It is an arithmetic number, because the mean of its divisors is an integer number (1864814).

Almost surely, 2^10389639 is an apocalyptic number.

10389639 is a deficient number, since it is larger than the sum of its proper divisors (4528873).

10389639 is a wasteful number, since it uses less digits than its factorization.

10389639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266417.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 10389639 is about 3223.2962941684. The cubic root of 10389639 is about 218.2060658500.

The spelling of 10389639 in words is "ten million, three hundred eighty-nine thousand, six hundred thirty-nine".