3440891663 has 4 divisors (see below), whose sum is σ = 3753700008. Its totient is φ = 3128083320.

The previous prime is 3440891603. The next prime is 3440891677. The reversal of 3440891663 is 3661980443.

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

It is a cyclic number.

It is not a de Polignac number, because 3440891663 - 2²² = 3436697359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440891603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156404156 + ... + 156404177.

It is an arithmetic number, because the mean of its divisors is an integer number (938425002).

Almost surely, 2^3440891663 is an apocalyptic number.

3440891663 is a deficient number, since it is larger than the sum of its proper divisors (312808345).

3440891663 is a wasteful number, since it uses less digits than its factorization.

3440891663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312808344.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 3440891663 is about 58659.1140659318. The cubic root of 3440891663 is about 1509.6988804992.

The spelling of 3440891663 in words is "three billion, four hundred forty million, eight hundred ninety-one thousand, six hundred sixty-three".