343772009 has 4 divisors (see below), whose sum is σ = 392882304. Its totient is φ = 294661716.

The previous prime is 343771999. The next prime is 343772017. The reversal of 343772009 is 900277343.

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 not a de Polignac number, because 343772009 - 2⁴ = 343771993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 343772009.

It is not an unprimeable number, because it can be changed into a prime (343772029) 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, 24555137 + ... + 24555150.

It is an arithmetic number, because the mean of its divisors is an integer number (98220576).

Almost surely, 2^343772009 is an apocalyptic number.

It is an amenable number.

343772009 is a deficient number, since it is larger than the sum of its proper divisors (49110295).

343772009 is an equidigital number, since it uses as much as digits as its factorization.

343772009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49110294.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 343772009 is about 18541.0897468299. The cubic root of 343772009 is about 700.5247826681.

The spelling of 343772009 in words is "three hundred forty-three million, seven hundred seventy-two thousand, nine".