440438039 has 2 divisors, whose sum is σ = 440438040. Its totient is φ = 440438038.

The previous prime is 440438029. The next prime is 440438059. The reversal of 440438039 is 930834044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440438039 - 2⁸ = 440437783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440438029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220219019 + 220219020.

It is an arithmetic number, because the mean of its divisors is an integer number (220219020).

Almost surely, 2^440438039 is an apocalyptic number.

440438039 is a deficient number, since it is larger than the sum of its proper divisors (1).

440438039 is an equidigital number, since it uses as much as digits as its factorization.

440438039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 440438039 is about 20986.6157109716. The cubic root of 440438039 is about 760.8428086663.

The spelling of 440438039 in words is "four hundred forty million, four hundred thirty-eight thousand, thirty-nine".