34518409 has 2 divisors, whose sum is σ = 34518410. Its totient is φ = 34518408.

The previous prime is 34518403. The next prime is 34518427. The reversal of 34518409 is 90481543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34480384 + 38025 = 5872^2 + 195^2 .

It is an emirp because it is prime and its reverse (90481543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34518409 - 2²³ = 26129801 is a prime.

It is not a weakly prime, because it can be changed into another prime (34518403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17259204 + 17259205.

It is an arithmetic number, because the mean of its divisors is an integer number (17259205).

Almost surely, 2^34518409 is an apocalyptic number.

It is an amenable number.

34518409 is a deficient number, since it is larger than the sum of its proper divisors (1).

34518409 is an equidigital number, since it uses as much as digits as its factorization.

34518409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 34518409 is about 5875.2369313926. The cubic root of 34518409 is about 325.5993956336.

The spelling of 34518409 in words is "thirty-four million, five hundred eighteen thousand, four hundred nine".