14840809 has 2 divisors, whose sum is σ = 14840810. Its totient is φ = 14840808.

The previous prime is 14840807. The next prime is 14840821. The reversal of 14840809 is 90804841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13483584 + 1357225 = 3672^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 14840809 - 2¹ = 14840807 is a prime.

It is a super-2 number, since 2×14840809² = 440499223548962, which contains 22 as substring.

Together with 14840807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14840807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7420404 + 7420405.

It is an arithmetic number, because the mean of its divisors is an integer number (7420405).

Almost surely, 2^14840809 is an apocalyptic number.

It is an amenable number.

14840809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14840809 is an equidigital number, since it uses as much as digits as its factorization.

14840809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 14840809 is about 3852.3770583888. The cubic root of 14840809 is about 245.7456610731.

The spelling of 14840809 in words is "fourteen million, eight hundred forty thousand, eight hundred nine".