440299981 has 4 divisors (see below), whose sum is σ = 480327264. Its totient is φ = 400272700.

The previous prime is 440299969. The next prime is 440299997. The reversal of 440299981 is 189992044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440299981 - 2¹¹ = 440297933 is a prime.

It is a super-3 number, since 3×440299981³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440299381) 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, 20013625 + ... + 20013646.

It is an arithmetic number, because the mean of its divisors is an integer number (120081816).

Almost surely, 2^440299981 is an apocalyptic number.

It is an amenable number.

440299981 is a deficient number, since it is larger than the sum of its proper divisors (40027283).

440299981 is a wasteful number, since it uses less digits than its factorization.

440299981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40027282.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 440299981 is about 20983.3262615821. The cubic root of 440299981 is about 760.7633034130.

The spelling of 440299981 in words is "four hundred forty million, two hundred ninety-nine thousand, nine hundred eighty-one".