10239643 has 4 divisors (see below), whose sum is σ = 10407568. Its totient is φ = 10071720.

The previous prime is 10239617. The next prime is 10239659. The reversal of 10239643 is 34693201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10239643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10239673) 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, 83871 + ... + 83992.

It is an arithmetic number, because the mean of its divisors is an integer number (2601892).

Almost surely, 2^10239643 is an apocalyptic number.

10239643 is a deficient number, since it is larger than the sum of its proper divisors (167925).

10239643 is an equidigital number, since it uses as much as digits as its factorization.

10239643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167924.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 10239643 is about 3199.9442182638. The cubic root of 10239643 is about 217.1508857381.

It can be divided in two parts, 102396 and 43, that multiplied together give a triangular number (4403028 = T₂₉₆₇).

The spelling of 10239643 in words is "ten million, two hundred thirty-nine thousand, six hundred forty-three".