10386639 has 12 divisors (see below), whose sum is σ = 15655536. Its totient is φ = 6623232.

The previous prime is 10386637. The next prime is 10386647. The reversal of 10386639 is 93668301.

It is a happy number.

10386639 is a `hidden beast` number, since 10 + 3 + 8 + 6 + 639 = 666.

It is not a de Polignac number, because 10386639 - 2¹ = 10386637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10386637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24882 + ... + 25295.

It is an arithmetic number, because the mean of its divisors is an integer number (1304628).

Almost surely, 2^10386639 is an apocalyptic number.

10386639 is a deficient number, since it is larger than the sum of its proper divisors (5268897).

10386639 is a wasteful number, since it uses less digits than its factorization.

10386639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50206 (or 50203 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 10386639 is about 3222.8308984494. The cubic root of 10386639 is about 218.1850615522.

It can be divided in two parts, 10386 and 639, that added together give a square (11025 = 105²).

The spelling of 10386639 in words is "ten million, three hundred eighty-six thousand, six hundred thirty-nine".