10028909 has 4 divisors (see below), whose sum is σ = 10940640. Its totient is φ = 9117180.

The previous prime is 10028899. The next prime is 10028917. The reversal of 10028909 is 90982001.

10028909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10028909 - 2⁸ = 10028653 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 (10028009) 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, 455849 + ... + 455870.

It is an arithmetic number, because the mean of its divisors is an integer number (2735160).

Almost surely, 2^10028909 is an apocalyptic number.

It is an amenable number.

10028909 is a deficient number, since it is larger than the sum of its proper divisors (911731).

10028909 is an equidigital number, since it uses as much as digits as its factorization.

10028909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911730.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 10028909 is about 3166.8452756647. The cubic root of 10028909 is about 215.6508777736.

The spelling of 10028909 in words is "ten million, twenty-eight thousand, nine hundred nine".