440897439 has 12 divisors (see below), whose sum is σ = 604054536. Its totient is φ = 285844032.

The previous prime is 440897423. The next prime is 440897449. The reversal of 440897439 is 934798044.

It is not a de Polignac number, because 440897439 - 2⁴ = 440897423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440897449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220227 + ... + 222219.

It is an arithmetic number, because the mean of its divisors is an integer number (50337878).

Almost surely, 2^440897439 is an apocalyptic number.

440897439 is a deficient number, since it is larger than the sum of its proper divisors (163157097).

440897439 is an frugal number, since it uses more digits than its factorization.

440897439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 440897439 is about 20997.5579294355. The cubic root of 440897439 is about 761.1072497449.

The spelling of 440897439 in words is "four hundred forty million, eight hundred ninety-seven thousand, four hundred thirty-nine".