439997455 has 8 divisors (see below), whose sum is σ = 528337152. Its totient is φ = 351771168.

The previous prime is 439997443. The next prime is 439997461. The reversal of 439997455 is 554799934.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 439997455 - 2⁵ = 439997423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 439997396 and 439997405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19567 + ... + 35536.

It is an arithmetic number, because the mean of its divisors is an integer number (66042144).

Almost surely, 2^439997455 is an apocalyptic number.

439997455 is a deficient number, since it is larger than the sum of its proper divisors (88339697).

439997455 is a wasteful number, since it uses less digits than its factorization.

439997455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56705.

The product of its digits is 6123600, while the sum is 55.

The square root of 439997455 is about 20976.1162992581. The cubic root of 439997455 is about 760.5890257079.

The spelling of 439997455 in words is "four hundred thirty-nine million, nine hundred ninety-seven thousand, four hundred fifty-five".