3440736641 has 4 divisors (see below), whose sum is σ = 3643132932. Its totient is φ = 3238340352.

The previous prime is 3440736617. The next prime is 3440736653. The reversal of 3440736641 is 1466370443.

It is a happy number.

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 1370850625 + 2069886016 = 37025^2 + 45496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3440736641 is a prime.

It is a super-3 number, since 3×3440736641³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3440736595 and 3440736604.

It is not an unprimeable number, because it can be changed into a prime (3440736241) 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, 101198120 + ... + 101198153.

It is an arithmetic number, because the mean of its divisors is an integer number (910783233).

Almost surely, 2^3440736641 is an apocalyptic number.

It is an amenable number.

3440736641 is a deficient number, since it is larger than the sum of its proper divisors (202396291).

3440736641 is a wasteful number, since it uses less digits than its factorization.

3440736641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202396290.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 3440736641 is about 58657.7926707100. The cubic root of 3440736641 is about 1509.6762080761.

The spelling of 3440736641 in words is "three billion, four hundred forty million, seven hundred thirty-six thousand, six hundred forty-one".