9925939 has 4 divisors (see below), whose sum is σ = 10004224. Its totient is φ = 9847656.

The previous prime is 9925931. The next prime is 9925957. The reversal of 9925939 is 9395299.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9925939 - 2³ = 9925931 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9925931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38952 + ... + 39205.

It is an arithmetic number, because the mean of its divisors is an integer number (2501056).

Almost surely, 2^9925939 is an apocalyptic number.

9925939 is a deficient number, since it is larger than the sum of its proper divisors (78285).

9925939 is a wasteful number, since it uses less digits than its factorization.

9925939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78284.

The product of its digits is 196830, while the sum is 46.

The square root of 9925939 is about 3150.5458257261. The cubic root of 9925939 is about 214.9102852662.

The spelling of 9925939 in words is "nine million, nine hundred twenty-five thousand, nine hundred thirty-nine".