10439639 has 4 divisors (see below), whose sum is σ = 11931024. Its totient is φ = 8948256.

The previous prime is 10439633. The next prime is 10439641. The reversal of 10439639 is 93693401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93693401 = 3853 ⋅24317.

It is a cyclic number.

It is not a de Polignac number, because 10439639 - 2⁸ = 10439383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10439599 and 10439608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10439633) 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, 745682 + ... + 745695.

It is an arithmetic number, because the mean of its divisors is an integer number (2982756).

Almost surely, 2^10439639 is an apocalyptic number.

10439639 is a deficient number, since it is larger than the sum of its proper divisors (1491385).

10439639 is an equidigital number, since it uses as much as digits as its factorization.

10439639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491384.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 10439639 is about 3231.0430204502. The cubic root of 10439639 is about 218.5555437622. Note that the first 4 decimals are identical.

The spelling of 10439639 in words is "ten million, four hundred thirty-nine thousand, six hundred thirty-nine".