10857409 has 8 divisors (see below), whose sum is σ = 11245568. Its totient is φ = 10471680.

The previous prime is 10857361. The next prime is 10857433. The reversal of 10857409 is 90475801.

It is a happy number.

10857409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10857409 - 2¹³ = 10849217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10857439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17584 + ... + 18190.

It is an arithmetic number, because the mean of its divisors is an integer number (1405696).

Almost surely, 2^10857409 is an apocalyptic number.

It is an amenable number.

10857409 is a deficient number, since it is larger than the sum of its proper divisors (388159).

10857409 is an equidigital number, since it uses as much as digits as its factorization.

10857409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 10857409 is about 3295.0582695910. The cubic root of 10857409 is about 221.4328582887.

The spelling of 10857409 in words is "ten million, eight hundred fifty-seven thousand, four hundred nine".