34450921 has 4 divisors (see below), whose sum is σ = 34838100. Its totient is φ = 34063744.

The previous prime is 34450907. The next prime is 34450937. The reversal of 34450921 is 12905443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12905443 = 811 ⋅15913.

It can be written as a sum of positive squares in 2 ways, for example, as 20575296 + 13875625 = 4536^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 34450921 - 2¹¹ = 34448873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34450921.

It is not an unprimeable number, because it can be changed into a prime (34450121) 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, 193456 + ... + 193633.

It is an arithmetic number, because the mean of its divisors is an integer number (8709525).

Almost surely, 2^34450921 is an apocalyptic number.

It is an amenable number.

34450921 is a deficient number, since it is larger than the sum of its proper divisors (387179).

34450921 is an equidigital number, since it uses as much as digits as its factorization.

34450921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387178.

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

The square root of 34450921 is about 5869.4906934077. The cubic root of 34450921 is about 325.3870607381.

The spelling of 34450921 in words is "thirty-four million, four hundred fifty thousand, nine hundred twenty-one".