9939425 has 12 divisors (see below), whose sum is σ = 12626796. Its totient is φ = 7756800.

The previous prime is 9939403. The next prime is 9939463. The reversal of 9939425 is 5249399.

It can be written as a sum of positive squares in 6 ways, for example, as 3508129 + 6431296 = 1873^2 + 2536^2 .

It is not a de Polignac number, because 9939425 - 2¹⁸ = 9677281 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3824 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (1052233).

Almost surely, 2^9939425 is an apocalyptic number.

It is an amenable number.

9939425 is a deficient number, since it is larger than the sum of its proper divisors (2687371).

9939425 is a wasteful number, since it uses less digits than its factorization.

9939425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748 (or 9743 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 9939425 is about 3152.6853633054. The cubic root of 9939425 is about 215.0075713937.

The spelling of 9939425 in words is "nine million, nine hundred thirty-nine thousand, four hundred twenty-five".