343429999 has 4 divisors (see below), whose sum is σ = 374650920. Its totient is φ = 312209080.

The previous prime is 343429979. The next prime is 343430023. The reversal of 343429999 is 999924343.

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 343429999 - 2¹⁵ = 343397231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343429909) 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, 15610444 + ... + 15610465.

It is an arithmetic number, because the mean of its divisors is an integer number (93662730).

Almost surely, 2^343429999 is an apocalyptic number.

343429999 is a deficient number, since it is larger than the sum of its proper divisors (31220921).

343429999 is a wasteful number, since it uses less digits than its factorization.

343429999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31220920.

The product of its digits is 1889568, while the sum is 52.

The square root of 343429999 is about 18531.8644232036. The cubic root of 343429999 is about 700.2923941747.

It can be divided in two parts, 3434 and 29999, that added together give a palindrome (33433).

The spelling of 343429999 in words is "three hundred forty-three million, four hundred twenty-nine thousand, nine hundred ninety-nine".