34538921 has 4 divisors (see below), whose sum is σ = 34628100. Its totient is φ = 34449744.

The previous prime is 34538899. The next prime is 34538923. The reversal of 34538921 is 12983543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12983543 = 3361 ⋅3863.

It can be written as a sum of positive squares in 2 ways, for example, as 21114025 + 13424896 = 4595^2 + 3664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34538921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (34538923) 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 3 ways as a sum of consecutive naturals, for example, 44006 + ... + 44783.

It is an arithmetic number, because the mean of its divisors is an integer number (8657025).

Almost surely, 2^34538921 is an apocalyptic number.

It is an amenable number.

34538921 is a deficient number, since it is larger than the sum of its proper divisors (89179).

34538921 is an equidigital number, since it uses as much as digits as its factorization.

34538921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89178.

The product of its digits is 25920, while the sum is 35.

The square root of 34538921 is about 5876.9823038699. The cubic root of 34538921 is about 325.6638769016.

The spelling of 34538921 in words is "thirty-four million, five hundred thirty-eight thousand, nine hundred twenty-one".