10840439 has 4 divisors (see below), whose sum is σ = 10883880. Its totient is φ = 10797000.

The previous prime is 10840433. The next prime is 10840451. The reversal of 10840439 is 93404801.

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

It is a cyclic number.

It is not a de Polignac number, because 10840439 - 2⁸ = 10840183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10840433) 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, 21344 + ... + 21845.

It is an arithmetic number, because the mean of its divisors is an integer number (2720970).

Almost surely, 2^10840439 is an apocalyptic number.

10840439 is a deficient number, since it is larger than the sum of its proper divisors (43441).

10840439 is an equidigital number, since it uses as much as digits as its factorization.

10840439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43440.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 10840439 is about 3292.4821943330. The cubic root of 10840439 is about 221.3174324979.

The spelling of 10840439 in words is "ten million, eight hundred forty thousand, four hundred thirty-nine".