440214647 has 4 divisors (see below), whose sum is σ = 440491896. Its totient is φ = 439937400.

The previous prime is 440214637. The next prime is 440214683. The reversal of 440214647 is 746412044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440214647 - 2⁴ = 440214631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440214617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136229 + ... + 139422.

It is an arithmetic number, because the mean of its divisors is an integer number (110122974).

Almost surely, 2^440214647 is an apocalyptic number.

440214647 is a deficient number, since it is larger than the sum of its proper divisors (277249).

440214647 is a wasteful number, since it uses less digits than its factorization.

440214647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277248.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 440214647 is about 20981.2927866707. The cubic root of 440214647 is about 760.7141527029.

The spelling of 440214647 in words is "four hundred forty million, two hundred fourteen thousand, six hundred forty-seven".