939249220 has 96 divisors (see below), whose sum is σ = 2449617408. Its totient is φ = 294561792.

The previous prime is 939249217. The next prime is 939249221. The reversal of 939249220 is 22942939.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (939249221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203377 + ... + 207943.

It is an arithmetic number, because the mean of its divisors is an integer number (25516848).

Almost surely, 2^939249220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939249220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224808704).

939249220 is an abundant number, since it is smaller than the sum of its proper divisors (1510368188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

939249220 is a wasteful number, since it uses less digits than its factorization.

939249220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709 (or 4707 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 939249220 is about 30647.1731159662. The cubic root of 939249220 is about 979.3252400814.

The spelling of 939249220 in words is "nine hundred thirty-nine million, two hundred forty-nine thousand, two hundred twenty".