9939450 has 96 divisors (see below), whose sum is σ = 26712576. Its totient is φ = 2439360.

The previous prime is 9939403. The next prime is 9939463. The reversal of 9939450 is 549399.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9939399 and 9939408.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148317 + ... + 148383.

It is an arithmetic number, because the mean of its divisors is an integer number (278256).

Almost surely, 2^9939450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9939450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13356288).

9939450 is an abundant number, since it is smaller than the sum of its proper divisors (16773126).

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

9939450 is a wasteful number, since it uses less digits than its factorization.

9939450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 9939450 is about 3152.6893281768. The cubic root of 9939450 is about 215.0077516585.

The spelling of 9939450 in words is "nine million, nine hundred thirty-nine thousand, four hundred fifty".