34447421 has 4 divisors (see below), whose sum is σ = 35287644. Its totient is φ = 33607200.

The previous prime is 34447393. The next prime is 34447433. The reversal of 34447421 is 12474443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12474443 = 1487 ⋅8389.

It can be written as a sum of positive squares in 2 ways, for example, as 2524921 + 31922500 = 1589^2 + 5650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34447421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34447121) 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, 420050 + ... + 420131.

It is an arithmetic number, because the mean of its divisors is an integer number (8821911).

Almost surely, 2^34447421 is an apocalyptic number.

It is an amenable number.

34447421 is a deficient number, since it is larger than the sum of its proper divisors (840223).

34447421 is an equidigital number, since it uses as much as digits as its factorization.

34447421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840222.

The product of its digits is 10752, while the sum is 29.

The square root of 34447421 is about 5869.1925339011. The cubic root of 34447421 is about 325.3760412622.

The spelling of 34447421 in words is "thirty-four million, four hundred forty-seven thousand, four hundred twenty-one".