12452809 has 8 divisors (see below), whose sum is σ = 13141440. Its totient is φ = 11767536.

The previous prime is 12452779. The next prime is 12452833. The reversal of 12452809 is 90825421.

12452809 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 not a de Polignac number, because 12452809 - 2⁵ = 12452777 is a prime.

It is a super-3 number, since 3×12452809³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12452899) 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, 11787 + ... + 12799.

It is an arithmetic number, because the mean of its divisors is an integer number (1642680).

Almost surely, 2^12452809 is an apocalyptic number.

12452809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12452809 is a deficient number, since it is larger than the sum of its proper divisors (688631).

12452809 is a wasteful number, since it uses less digits than its factorization.

12452809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 12452809 is about 3528.8537799121. The cubic root of 12452809 is about 231.7870184199.

The spelling of 12452809 in words is "twelve million, four hundred fifty-two thousand, eight hundred nine".