34209919 has 2 divisors, whose sum is σ = 34209920. Its totient is φ = 34209918.

The previous prime is 34209907. The next prime is 34209971. The reversal of 34209919 is 91990243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34209919 - 2²¹ = 32112767 is a prime.

It is a super-2 number, since 2×34209919² = 2340637115973122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34209419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17104959 + 17104960.

It is an arithmetic number, because the mean of its divisors is an integer number (17104960).

Almost surely, 2^34209919 is an apocalyptic number.

34209919 is a deficient number, since it is larger than the sum of its proper divisors (1).

34209919 is an equidigital number, since it uses as much as digits as its factorization.

34209919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 34209919 is about 5848.9246020102. The cubic root of 34209919 is about 324.6265343192.

The spelling of 34209919 in words is "thirty-four million, two hundred nine thousand, nine hundred nineteen".