9439940 has 12 divisors (see below), whose sum is σ = 19823916. Its totient is φ = 3775968.

The previous prime is 9439931. The next prime is 9439957. The reversal of 9439940 is 499349.

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 7739524 = 1304^2 + 2782^2 .

It is a super-2 number, since 2×9439940² = 178224934407200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9439894 and 9439903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235979 + ... + 236018.

It is an arithmetic number, because the mean of its divisors is an integer number (1651993).

Almost surely, 2^9439940 is an apocalyptic number.

It is an amenable number.

9439940 is an abundant number, since it is smaller than the sum of its proper divisors (10383976).

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

9439940 is a wasteful number, since it uses less digits than its factorization.

9439940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472006 (or 472004 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 9439940 is about 3072.4485349636. The cubic root of 9439940 is about 211.3439132873.

The spelling of 9439940 in words is "nine million, four hundred thirty-nine thousand, nine hundred forty".