3491609855 has 24 divisors (see below), whose sum is σ = 4456637952. Its totient is φ = 2625587712.

The previous prime is 3491609833. The next prime is 3491609861. The reversal of 3491609855 is 5589061943.

It is a happy number.

It is not a de Polignac number, because 3491609855 - 2⁶ = 3491609791 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2098754 + ... + 2100416.

It is an arithmetic number, because the mean of its divisors is an integer number (185693248).

Almost surely, 2^3491609855 is an apocalyptic number.

3491609855 is a deficient number, since it is larger than the sum of its proper divisors (965028097).

3491609855 is a wasteful number, since it uses less digits than its factorization.

3491609855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155 (or 3138 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 3491609855 is about 59089.8456166540. The cubic root of 3491609855 is about 1517.0803046540.

The spelling of 3491609855 in words is "three billion, four hundred ninety-one million, six hundred nine thousand, eight hundred fifty-five".