10440439 has 4 divisors (see below), whose sum is σ = 10662624. Its totient is φ = 10218256.

The previous prime is 10440433. The next prime is 10440449. The reversal of 10440439 is 93404401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93404401 = 1931 ⋅48371.

It is a cyclic number.

It is not a de Polignac number, because 10440439 - 2¹⁵ = 10407671 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 (10440433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111022 + ... + 111115.

It is an arithmetic number, because the mean of its divisors is an integer number (2665656).

Almost surely, 2^10440439 is an apocalyptic number.

10440439 is a deficient number, since it is larger than the sum of its proper divisors (222185).

10440439 is an equidigital number, since it uses as much as digits as its factorization.

10440439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222184.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 10440439 is about 3231.1668171111. The cubic root of 10440439 is about 218.5611263297.

The spelling of 10440439 in words is "ten million, four hundred forty thousand, four hundred thirty-nine".