10438865 has 4 divisors (see below), whose sum is σ = 12526644. Its totient is φ = 8351088.

The previous prime is 10438861. The next prime is 10438871. The reversal of 10438865 is 56883401.

10438865 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6370576 + 4068289 = 2524^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 10438865 - 2² = 10438861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10438861) 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, 1043882 + ... + 1043891.

It is an arithmetic number, because the mean of its divisors is an integer number (3131661).

Almost surely, 2^10438865 is an apocalyptic number.

It is an amenable number.

10438865 is a deficient number, since it is larger than the sum of its proper divisors (2087779).

10438865 is an equidigital number, since it uses as much as digits as its factorization.

10438865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087778.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 10438865 is about 3230.9232426661. The cubic root of 10438865 is about 218.5501423566.

The spelling of 10438865 in words is "ten million, four hundred thirty-eight thousand, eight hundred sixty-five".