34394809 has 4 divisors (see below), whose sum is σ = 34646004. Its totient is φ = 34143616.

The previous prime is 34394771. The next prime is 34394831. The reversal of 34394809 is 90849343.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26749584 + 7645225 = 5172^2 + 2765^2 .

It is a cyclic number.

It is not a de Polignac number, because 34394809 - 2¹⁷ = 34263737 is a prime.

It is a super-2 number, since 2×34394809² = 2366005772292962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34394839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125392 + ... + 125665.

It is an arithmetic number, because the mean of its divisors is an integer number (8661501).

Almost surely, 2^34394809 is an apocalyptic number.

It is an amenable number.

34394809 is a deficient number, since it is larger than the sum of its proper divisors (251195).

34394809 is a wasteful number, since it uses less digits than its factorization.

34394809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251194.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 34394809 is about 5864.7087736733. The cubic root of 34394809 is about 325.2103064855.

The spelling of 34394809 in words is "thirty-four million, three hundred ninety-four thousand, eight hundred nine".