344661403 has 4 divisors (see below), whose sum is σ = 346034808. Its totient is φ = 343288000.

The previous prime is 344661341. The next prime is 344661409. The reversal of 344661403 is 304166443.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 344661403 - 2⁹ = 344660891 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344661409) 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, 686326 + ... + 686827.

It is an arithmetic number, because the mean of its divisors is an integer number (86508702).

Almost surely, 2^344661403 is an apocalyptic number.

344661403 is a deficient number, since it is larger than the sum of its proper divisors (1373405).

344661403 is a wasteful number, since it uses less digits than its factorization.

344661403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373404.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 344661403 is about 18565.0586586738. The cubic root of 344661403 is about 701.1283862087.

The spelling of 344661403 in words is "three hundred forty-four million, six hundred sixty-one thousand, four hundred three".