3440887603921 has 4 divisors (see below), whose sum is σ = 3441157342132. Its totient is φ = 3440617865712.

The previous prime is 3440887603841. The next prime is 3440887603997. The reversal of 3440887603921 is 1293067880443.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2010471603921 + 1430416000000 = 1417911^2 + 1196000^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440887603921 - 2¹³ = 3440887595729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3440887603421) 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, 134849970 + ... + 134875483.

It is an arithmetic number, because the mean of its divisors is an integer number (860289335533).

Almost surely, 2^{3440887603921} is an apocalyptic number.

It is an amenable number.

3440887603921 is a deficient number, since it is larger than the sum of its proper divisors (269738211).

3440887603921 is a wasteful number, since it uses less digits than its factorization.

3440887603921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269738210.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 3440887603921 in words is "three trillion, four hundred forty billion, eight hundred eighty-seven million, six hundred three thousand, nine hundred twenty-one".