34421905 has 16 divisors (see below), whose sum is σ = 47698560. Its totient is φ = 23357952.

The previous prime is 34421903. The next prime is 34421921. The reversal of 34421905 is 50912443.

It is a cyclic number.

It is not a de Polignac number, because 34421905 - 2¹ = 34421903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34421903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1675 + ... + 8464.

It is an arithmetic number, because the mean of its divisors is an integer number (2981160).

Almost surely, 2^34421905 is an apocalyptic number.

34421905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

34421905 is a deficient number, since it is larger than the sum of its proper divisors (13276655).

34421905 is a wasteful number, since it uses less digits than its factorization.

34421905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 34421905 is about 5867.0184080161. The cubic root of 34421905 is about 325.2956835695.

The spelling of 34421905 in words is "thirty-four million, four hundred twenty-one thousand, nine hundred five".