344663999 has 4 divisors (see below), whose sum is σ = 353070480. Its totient is φ = 336257520.

The previous prime is 344663959. The next prime is 344664031. The reversal of 344663999 is 999366443.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 344663999 - 2²⁸ = 76228543 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 344663999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344663909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4203179 + ... + 4203260.

It is an arithmetic number, because the mean of its divisors is an integer number (88267620).

Almost surely, 2^344663999 is an apocalyptic number.

344663999 is a deficient number, since it is larger than the sum of its proper divisors (8406481).

344663999 is an equidigital number, since it uses as much as digits as its factorization.

344663999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406480.

The product of its digits is 3779136, while the sum is 53.

The square root of 344663999 is about 18565.1285748308. The cubic root of 344663999 is about 701.1301465110.

The spelling of 344663999 in words is "three hundred forty-four million, six hundred sixty-three thousand, nine hundred ninety-nine".