3440423440 has 40 divisors (see below), whose sum is σ = 8039217600. Its totient is φ = 1369247616.

The previous prime is 3440423417. The next prime is 3440423471. The reversal of 3440423440 is 443240443.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3440423399 and 3440423408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92134 + ... + 123973.

It is an arithmetic number, because the mean of its divisors is an integer number (200980440).

Almost surely, 2^3440423440 is an apocalyptic number.

It is an amenable number.

3440423440 is an abundant number, since it is smaller than the sum of its proper divisors (4598794160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3440423440 is a wasteful number, since it uses less digits than its factorization.

3440423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216319 (or 216313 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 3440423440 is about 58655.1228794212. The cubic root of 3440423440 is about 1509.6303994316.

Adding to 3440423440 its reverse (443240443), we get a palindrome (3883663883).

The spelling of 3440423440 in words is "three billion, four hundred forty million, four hundred twenty-three thousand, four hundred forty".