344277421 has 4 divisors (see below), whose sum is σ = 364529052. Its totient is φ = 324025792.

The previous prime is 344277419. The next prime is 344277467. The reversal of 344277421 is 124772443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124772443 = 6113 ⋅20411.

It can be written as a sum of positive squares in 2 ways, for example, as 142324900 + 201952521 = 11930^2 + 14211^2 .

It is a cyclic number.

It is not a de Polignac number, because 344277421 - 2¹ = 344277419 is a prime.

It is a super-2 number, since 2×344277421² = 237053885220822482, 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 (344217421) 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, 10125790 + ... + 10125823.

It is an arithmetic number, because the mean of its divisors is an integer number (91132263).

Almost surely, 2^344277421 is an apocalyptic number.

It is an amenable number.

344277421 is a deficient number, since it is larger than the sum of its proper divisors (20251631).

344277421 is a wasteful number, since it uses less digits than its factorization.

344277421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20251630.

The product of its digits is 37632, while the sum is 34.

The square root of 344277421 is about 18554.7142527176. The cubic root of 344277421 is about 700.8679173178.

The spelling of 344277421 in words is "three hundred forty-four million, two hundred seventy-seven thousand, four hundred twenty-one".