3809220621 has 8 divisors (see below), whose sum is σ = 5123907840. Its totient is φ = 2517006912.

The previous prime is 3809220589. The next prime is 3809220641. The reversal of 3809220621 is 1260229083.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3809220621 - 2⁵ = 3809220589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809220641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5617981 + ... + 5618658.

It is an arithmetic number, because the mean of its divisors is an integer number (640488480).

Almost surely, 2^3809220621 is an apocalyptic number.

It is an amenable number.

3809220621 is a deficient number, since it is larger than the sum of its proper divisors (1314687219).

3809220621 is a wasteful number, since it uses less digits than its factorization.

3809220621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11236755.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 3809220621 is about 61718.8838282093. The cubic root of 3809220621 is about 1561.7518973302.

The spelling of 3809220621 in words is "three billion, eight hundred nine million, two hundred twenty thousand, six hundred twenty-one".