939401221 has 16 divisors (see below), whose sum is σ = 1042771968. Its totient is φ = 839138800.

The previous prime is 939401201. The next prime is 939401227. The reversal of 939401221 is 122104939.

939401221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 939401221 - 2⁵ = 939401189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939401227) 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, 171690 + ... + 177076.

It is an arithmetic number, because the mean of its divisors is an integer number (65173248).

Almost surely, 2^939401221 is an apocalyptic number.

It is an amenable number.

939401221 is a deficient number, since it is larger than the sum of its proper divisors (103370747).

939401221 is a wasteful number, since it uses less digits than its factorization.

939401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 939401221 is about 30649.6528691599. The cubic root of 939401221 is about 979.3780660986.

The spelling of 939401221 in words is "nine hundred thirty-nine million, four hundred one thousand, two hundred twenty-one".