344256421 has 8 divisors (see below), whose sum is σ = 365584320. Its totient is φ = 323249472.

The previous prime is 344256403. The next prime is 344256427. The reversal of 344256421 is 124652443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344256421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344256427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78025 + ... + 82318.

It is an arithmetic number, because the mean of its divisors is an integer number (45698040).

Almost surely, 2^344256421 is an apocalyptic number.

It is an amenable number.

344256421 is a deficient number, since it is larger than the sum of its proper divisors (21327899).

344256421 is a wasteful number, since it uses less digits than its factorization.

344256421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160475.

The product of its digits is 23040, while the sum is 31.

The square root of 344256421 is about 18554.1483501669. The cubic root of 344256421 is about 700.8536666732.

The spelling of 344256421 in words is "three hundred forty-four million, two hundred fifty-six thousand, four hundred twenty-one".