34143209 has 4 divisors (see below), whose sum is σ = 35940240. Its totient is φ = 32346180.

The previous prime is 34143203. The next prime is 34143217. The reversal of 34143209 is 90234143.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34143209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34143203) 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, 898487 + ... + 898524.

It is an arithmetic number, because the mean of its divisors is an integer number (8985060).

Almost surely, 2^34143209 is an apocalyptic number.

It is an amenable number.

34143209 is a deficient number, since it is larger than the sum of its proper divisors (1797031).

34143209 is a wasteful number, since it uses less digits than its factorization.

34143209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797030.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 34143209 is about 5843.2190614421. The cubic root of 34143209 is about 324.4153876845.

It can be divided in two parts, 3414320 and 9, that multiplied together give a triangular number (30728880 = T₇₈₃₉).

The spelling of 34143209 in words is "thirty-four million, one hundred forty-three thousand, two hundred nine".