34407921 has 16 divisors (see below), whose sum is σ = 46692800. Its totient is φ = 22534848.

The previous prime is 34407913. The next prime is 34407959. The reversal of 34407921 is 12970443.

It is a happy number.

It is not a de Polignac number, because 34407921 - 2³ = 34407913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34407911) 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, 45075 + ... + 45831.

It is an arithmetic number, because the mean of its divisors is an integer number (2918300).

Almost surely, 2^34407921 is an apocalyptic number.

It is an amenable number.

34407921 is a deficient number, since it is larger than the sum of its proper divisors (12284879).

34407921 is a wasteful number, since it uses less digits than its factorization.

34407921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 34407921 is about 5865.8265402243. The cubic root of 34407921 is about 325.2516268273.

The spelling of 34407921 in words is "thirty-four million, four hundred seven thousand, nine hundred twenty-one".