34643999 has 4 divisors (see below), whose sum is σ = 37308936. Its totient is φ = 31979064.

The previous prime is 34643993. The next prime is 34644007. The reversal of 34643999 is 99934643.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99934643 = 47 ⋅2126269.

It is not a de Polignac number, because 34643999 - 2⁸ = 34643743 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 (34643993) 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, 1332449 + ... + 1332474.

It is an arithmetic number, because the mean of its divisors is an integer number (9327234).

Almost surely, 2^34643999 is an apocalyptic number.

34643999 is a deficient number, since it is larger than the sum of its proper divisors (2664937).

34643999 is a wasteful number, since it uses less digits than its factorization.

34643999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664936.

The product of its digits is 629856, while the sum is 47.

The square root of 34643999 is about 5885.9153069000. The cubic root of 34643999 is about 325.9937990465.

The spelling of 34643999 in words is "thirty-four million, six hundred forty-three thousand, nine hundred ninety-nine".