440468431 has 8 divisors (see below), whose sum is σ = 499316720. Its totient is φ = 385186752.

The previous prime is 440468383. The next prime is 440468459. The reversal of 440468431 is 134864044.

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 440468431 - 2⁹ = 440467919 is a prime.

It is a super-2 number, since 2×440468431² = 388024877415203522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440468471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891390 + ... + 891883.

It is an arithmetic number, because the mean of its divisors is an integer number (62414590).

Almost surely, 2^440468431 is an apocalyptic number.

440468431 is a deficient number, since it is larger than the sum of its proper divisors (58848289).

440468431 is a wasteful number, since it uses less digits than its factorization.

440468431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783305.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 440468431 is about 20987.3397790192. The cubic root of 440468431 is about 760.8603086707.

The spelling of 440468431 in words is "four hundred forty million, four hundred sixty-eight thousand, four hundred thirty-one".