3629929221 has 40 divisors (see below), whose sum is σ = 5665169664. Its totient is φ = 2313541440.

The previous prime is 3629929187. The next prime is 3629929223. The reversal of 3629929221 is 1229299263.

It is not a de Polignac number, because 3629929221 - 2²³ = 3621540613 is a prime.

It is a super-3 number, since 3×3629929221³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3629929223) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 199705 + ... + 217121.

Almost surely, 2^3629929221 is an apocalyptic number.

3629929221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3629929221 is a deficient number, since it is larger than the sum of its proper divisors (2035240443).

3629929221 is a wasteful number, since it uses less digits than its factorization.

3629929221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17543 (or 17534 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 3629929221 is about 60248.8939400550. The cubic root of 3629929221 is about 1536.8543792587.

The spelling of 3629929221 in words is "three billion, six hundred twenty-nine million, nine hundred twenty-nine thousand, two hundred twenty-one".