344246021 has 6 divisors (see below), whose sum is σ = 400449510. Its totient is φ = 295067976.

The previous prime is 344245999. The next prime is 344246051. The reversal of 344246021 is 120642443.

It can be written as a sum of positive squares in only one way, i.e., 331749796 + 12496225 = 18214^2 + 3535^2 .

It is a de Polignac number, because none of the positive numbers 2^k-344246021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344246051) 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 5 ways as a sum of consecutive naturals, for example, 3512666 + ... + 3512763.

It is an arithmetic number, because the mean of its divisors is an integer number (66741585).

Almost surely, 2^344246021 is an apocalyptic number.

It is an amenable number.

344246021 is a deficient number, since it is larger than the sum of its proper divisors (56203489).

344246021 is an equidigital number, since it uses as much as digits as its factorization.

344246021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7025443 (or 7025436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 344246021 is about 18553.8680872750. The cubic root of 344246021 is about 700.8466089966.

Adding to 344246021 its reverse (120642443), we get a palindrome (464888464).

The spelling of 344246021 in words is "three hundred forty-four million, two hundred forty-six thousand, twenty-one".