9929725 has 12 divisors (see below), whose sum is σ = 13260436. Its totient is φ = 7332480.

The previous prime is 9929719. The next prime is 9929729. The reversal of 9929725 is 5279299.

It can be written as a sum of positive squares in 6 ways, for example, as 2328676 + 7601049 = 1526^2 + 2757^2 .

It is not a de Polignac number, because 9929725 - 2⁵ = 9929693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9929729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14952 + ... + 15601.

Almost surely, 2^9929725 is an apocalyptic number.

It is an amenable number.

9929725 is a deficient number, since it is larger than the sum of its proper divisors (3330711).

9929725 is a wasteful number, since it uses less digits than its factorization.

9929725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30576 (or 30571 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 9929725 is about 3151.1466167095. The cubic root of 9929725 is about 214.9376058355.

The spelling of 9929725 in words is "nine million, nine hundred twenty-nine thousand, seven hundred twenty-five".