3849579621 has 32 divisors (see below), whose sum is σ = 5971633920. Its totient is φ = 2446310592.

The previous prime is 3849579611. The next prime is 3849579623. The reversal of 3849579621 is 1269759483.

3849579621 is a `hidden beast` number, since 3 + 8 + 4 + 9 + 5 + 7 + 9 + 621 = 666.

3849579621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3849579621 - 2⁵ = 3849579589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3849579623) 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 31 ways as a sum of consecutive naturals, for example, 171375 + ... + 192531.

It is an arithmetic number, because the mean of its divisors is an integer number (186613560).

Almost surely, 2^3849579621 is an apocalyptic number.

It is an amenable number.

3849579621 is a deficient number, since it is larger than the sum of its proper divisors (2122054299).

3849579621 is a wasteful number, since it uses less digits than its factorization.

3849579621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21482 (or 21476 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 3849579621 is about 62044.9806269613. The cubic root of 3849579621 is about 1567.2481608184.

The spelling of 3849579621 in words is "three billion, eight hundred forty-nine million, five hundred seventy-nine thousand, six hundred twenty-one".