2443440421 has 8 divisors (see below), whose sum is σ = 2461917600. Its totient is φ = 2424991248.

The previous prime is 2443440383. The next prime is 2443440431. The reversal of 2443440421 is 1240443442.

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 2443440421 - 2²³ = 2435051813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2443440421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443440431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188470 + ... + 201016.

It is an arithmetic number, because the mean of its divisors is an integer number (307739700).

Almost surely, 2^2443440421 is an apocalyptic number.

It is an amenable number.

2443440421 is a deficient number, since it is larger than the sum of its proper divisors (18477179).

2443440421 is a wasteful number, since it uses less digits than its factorization.

2443440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14003.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 2443440421 is about 49431.1685174445. The cubic root of 2443440421 is about 1346.8955498116.

Adding to 2443440421 its reverse (1240443442), we get a palindrome (3683883863).

The spelling of 2443440421 in words is "two billion, four hundred forty-three million, four hundred forty thousand, four hundred twenty-one".