9779725 has 12 divisors (see below), whose sum is σ = 12519040. Its totient is φ = 7570800.

The previous prime is 9779701. The next prime is 9779741. The reversal of 9779725 is 5279779.

It is a happy number.

It is not a de Polignac number, because 9779725 - 2⁷ = 9779597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5535 + ... + 7084.

Almost surely, 2^9779725 is an apocalyptic number.

It is an amenable number.

9779725 is a deficient number, since it is larger than the sum of its proper divisors (2739315).

9779725 is a wasteful number, since it uses less digits than its factorization.

9779725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12660 (or 12655 counting only the distinct ones).

The product of its digits is 277830, while the sum is 46.

The square root of 9779725 is about 3127.2551862616. The cubic root of 9779725 is about 213.8498160169.

The spelling of 9779725 in words is "nine million, seven hundred seventy-nine thousand, seven hundred twenty-five".