214806809 has 16 divisors (see below), whose sum is σ = 249150720. Its totient is φ = 181396800.

The previous prime is 214806773. The next prime is 214806811. The reversal of 214806809 is 908608412.

214806809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 214806809 - 2¹² = 214802713 is a prime.

It is a super-2 number, since 2×214806809² = 92283930385524962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (214806859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164459 + ... + 165759.

It is an arithmetic number, because the mean of its divisors is an integer number (15571920).

Almost surely, 2^214806809 is an apocalyptic number.

It is an amenable number.

214806809 is a deficient number, since it is larger than the sum of its proper divisors (34343911).

214806809 is a wasteful number, since it uses less digits than its factorization.

214806809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 214806809 is about 14656.2890596494. The cubic root of 214806809 is about 598.8931529233.

The spelling of 214806809 in words is "two hundred fourteen million, eight hundred six thousand, eight hundred nine".