344983981 has 4 divisors (see below), whose sum is σ = 346211964. Its totient is φ = 343756000.

The previous prime is 344983979. The next prime is 344983993. The reversal of 344983981 is 189389443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 189389443 = 101 ⋅1875143.

It can be written as a sum of positive squares in 2 ways, for example, as 270438025 + 74545956 = 16445^2 + 8634^2 .

It is a cyclic number.

It is not a de Polignac number, because 344983981 - 2¹ = 344983979 is a prime.

It is a super-2 number, since 2×344983981² = 238027894293216722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344983921) 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, 613570 + ... + 614131.

It is an arithmetic number, because the mean of its divisors is an integer number (86552991).

Almost surely, 2^344983981 is an apocalyptic number.

It is an amenable number.

344983981 is a deficient number, since it is larger than the sum of its proper divisors (1227983).

344983981 is a wasteful number, since it uses less digits than its factorization.

344983981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227982.

The product of its digits is 746496, while the sum is 49.

The square root of 344983981 is about 18573.7443990166. The cubic root of 344983981 is about 701.3470530589.

The spelling of 344983981 in words is "three hundred forty-four million, nine hundred eighty-three thousand, nine hundred eighty-one".