10538639 has 4 divisors (see below), whose sum is σ = 10717320. Its totient is φ = 10359960.

The previous prime is 10538617. The next prime is 10538663. The reversal of 10538639 is 93683501.

10538639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93683501 = 557 ⋅168193.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10538639 is a prime.

It is a super-3 number, since 3×10538639³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10538599 and 10538608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10538699) 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, 89252 + ... + 89369.

It is an arithmetic number, because the mean of its divisors is an integer number (2679330).

Almost surely, 2^10538639 is an apocalyptic number.

10538639 is a deficient number, since it is larger than the sum of its proper divisors (178681).

10538639 is an equidigital number, since it uses as much as digits as its factorization.

10538639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178680.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 10538639 is about 3246.3270013971. The cubic root of 10538639 is about 219.2442317435.

The spelling of 10538639 in words is "ten million, five hundred thirty-eight thousand, six hundred thirty-nine".