3440004421 has 16 divisors (see below), whose sum is σ = 3975583104. Its totient is φ = 2915587584.

The previous prime is 3440004409. The next prime is 3440004431. The reversal of 3440004421 is 1244000443.

It is not a de Polignac number, because 3440004421 - 2¹⁵ = 3439971653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3440004392 and 3440004401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440004431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345505 + ... + 355321.

It is an arithmetic number, because the mean of its divisors is an integer number (248473944).

Almost surely, 2^3440004421 is an apocalyptic number.

It is an amenable number.

3440004421 is a deficient number, since it is larger than the sum of its proper divisors (535578683).

3440004421 is a wasteful number, since it uses less digits than its factorization.

3440004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 3440004421 is about 58651.5508831608. The cubic root of 3440004421 is about 1509.5691095435.

Adding to 3440004421 its reverse (1244000443), we get a palindrome (4684004864).

It can be divided in two parts, 344000442 and 1, that added together give a palindrome (344000443).

The spelling of 3440004421 in words is "three billion, four hundred forty million, four thousand, four hundred twenty-one".