939949940 has 24 divisors (see below), whose sum is σ = 1977794280. Its totient is φ = 375237248.

The previous prime is 939949921. The next prime is 939949949. The reversal of 939949940 is 49949939.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22829284 + 917120656 = 4778^2 + 30284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939949949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35987 + ... + 56346.

It is an arithmetic number, because the mean of its divisors is an integer number (82408095).

Almost surely, 2^939949940 is an apocalyptic number.

It is an amenable number.

939949940 is an abundant number, since it is smaller than the sum of its proper divisors (1037844340).

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

939949940 is a wasteful number, since it uses less digits than its factorization.

939949940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92851 (or 92849 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 56.

The square root of 939949940 is about 30658.6030340588. The cubic root of 939949940 is about 979.5687190166.

The spelling of 939949940 in words is "nine hundred thirty-nine million, nine hundred forty-nine thousand, nine hundred forty".