39100221 has 24 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 24230016.

The previous prime is 39100213. The next prime is 39100297. The reversal of 39100221 is 12200193.

It is a happy number.

It is not a de Polignac number, because 39100221 - 2³ = 39100213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39100194 and 39100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39100121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11160 + ... + 14238.

It is an arithmetic number, because the mean of its divisors is an integer number (2522520).

Almost surely, 2^39100221 is an apocalyptic number.

It is an amenable number.

39100221 is a deficient number, since it is larger than the sum of its proper divisors (21440259).

39100221 is a wasteful number, since it uses less digits than its factorization.

39100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3182 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 39100221 is about 6253.0169518401. The cubic root of 39100221 is about 339.4113835213.

The spelling of 39100221 in words is "thirty-nine million, one hundred thousand, two hundred twenty-one".