34394987905 has 8 divisors (see below), whose sum is σ = 41550993000. Its totient is φ = 27331318656.

The previous prime is 34394987881. The next prime is 34394987917. The reversal of 34394987905 is 50978949343.

It can be written as a sum of positive squares in 4 ways, for example, as 2342172816 + 32052815089 = 48396^2 + 179033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34394987905 - 2⁵ = 34394987873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23083140 + ... + 23084629.

It is an arithmetic number, because the mean of its divisors is an integer number (5193874125).

Almost surely, 2^34394987905 is an apocalyptic number.

It is an amenable number.

34394987905 is a deficient number, since it is larger than the sum of its proper divisors (7156005095).

34394987905 is a wasteful number, since it uses less digits than its factorization.

34394987905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46167923.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 34394987905 in words is "thirty-four billion, three hundred ninety-four million, nine hundred eighty-seven thousand, nine hundred five".