914409809 has 2 divisors, whose sum is σ = 914409810. Its totient is φ = 914409808.

The previous prime is 914409803. The next prime is 914409857. The reversal of 914409809 is 908904419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 910349584 + 4060225 = 30172^2 + 2015^2 .

It is an emirp because it is prime and its reverse (908904419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 914409809 - 2¹⁶ = 914344273 is a prime.

It is a super-2 number, since 2×914409809² = 1672290597590832962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 914409809.

It is not a weakly prime, because it can be changed into another prime (914409803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457204904 + 457204905.

It is an arithmetic number, because the mean of its divisors is an integer number (457204905).

Almost surely, 2^914409809 is an apocalyptic number.

It is an amenable number.

914409809 is a deficient number, since it is larger than the sum of its proper divisors (1).

914409809 is an equidigital number, since it uses as much as digits as its factorization.

914409809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 914409809 is about 30239.2097945697. The cubic root of 914409809 is about 970.6149107069.

The spelling of 914409809 in words is "nine hundred fourteen million, four hundred nine thousand, eight hundred nine".