40830221 has 16 divisors (see below), whose sum is σ = 45152640. Its totient is φ = 36748800.

The previous prime is 40830217. The next prime is 40830233. The reversal of 40830221 is 12203804.

It is a cyclic number.

It is not a de Polignac number, because 40830221 - 2² = 40830217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40830193 and 40830202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40830271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101621 + ... + 102021.

It is an arithmetic number, because the mean of its divisors is an integer number (2822040).

Almost surely, 2^40830221 is an apocalyptic number.

It is an amenable number.

40830221 is a deficient number, since it is larger than the sum of its proper divisors (4322419).

40830221 is a wasteful number, since it uses less digits than its factorization.

40830221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40830221 is about 6389.8529717044. The cubic root of 40830221 is about 344.3451022295.

The spelling of 40830221 in words is "forty million, eight hundred thirty thousand, two hundred twenty-one".