10438643 has 4 divisors (see below), whose sum is σ = 10468080. Its totient is φ = 10409208.

The previous prime is 10438639. The next prime is 10438679. The reversal of 10438643 is 34683401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34683401 = 181 ⋅191621.

It is a cyclic number.

It is not a de Polignac number, because 10438643 - 2² = 10438639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10438613) 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, 14180 + ... + 14897.

It is an arithmetic number, because the mean of its divisors is an integer number (2617020).

Almost surely, 2^10438643 is an apocalyptic number.

10438643 is a deficient number, since it is larger than the sum of its proper divisors (29437).

10438643 is an equidigital number, since it uses as much as digits as its factorization.

10438643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29436.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 10438643 is about 3230.8888869783. Note that the first 5 decimals coincide. The cubic root of 10438643 is about 218.5485930670.

The spelling of 10438643 in words is "ten million, four hundred thirty-eight thousand, six hundred forty-three".