440669997 has 16 divisors (see below), whose sum is σ = 663912000. Its totient is φ = 288799632.

The previous prime is 440669981. The next prime is 440670001. The reversal of 440669997 is 799966044.

It is not a de Polignac number, because 440669997 - 2⁴ = 440669981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440669797) 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 15 ways as a sum of consecutive naturals, for example, 136722 + ... + 139907.

It is an arithmetic number, because the mean of its divisors is an integer number (41494500).

Almost surely, 2^440669997 is an apocalyptic number.

It is an amenable number.

440669997 is a deficient number, since it is larger than the sum of its proper divisors (223242003).

440669997 is a wasteful number, since it uses less digits than its factorization.

440669997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276697 (or 276691 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 440669997 is about 20992.1413152637. The cubic root of 440669997 is about 760.9763519330.

The spelling of 440669997 in words is "four hundred forty million, six hundred sixty-nine thousand, nine hundred ninety-seven".