9009428 has 12 divisors (see below), whose sum is σ = 15855840. Its totient is φ = 4479192.

The previous prime is 9009419. The next prime is 9009443. The reversal of 9009428 is 8249009.

It is a junction number, because it is equal to n+sod(n) for n = 9009394 and 9009403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576 + ... + 7007.

It is an arithmetic number, because the mean of its divisors is an integer number (1321320).

Almost surely, 2^9009428 is an apocalyptic number.

It is an amenable number.

9009428 is a deficient number, since it is larger than the sum of its proper divisors (6846412).

9009428 is a wasteful number, since it uses less digits than its factorization.

9009428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12766 (or 12764 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 9009428 is about 3001.5709220340. The cubic root of 9009428 is about 208.0809904029.

The spelling of 9009428 in words is "nine million, nine thousand, four hundred twenty-eight".