344387816 has 16 divisors (see below), whose sum is σ = 647312100. Its totient is φ = 171771264.

The previous prime is 344387807. The next prime is 344387831. The reversal of 344387816 is 618783443.

It can be written as a sum of positive squares in 2 ways, for example, as 344250916 + 136900 = 18554^2 + 370^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49355 + ... + 55898.

Almost surely, 2^344387816 is an apocalyptic number.

It is an amenable number.

344387816 is a deficient number, since it is larger than the sum of its proper divisors (302924284).

344387816 is a wasteful number, since it uses less digits than its factorization.

344387816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105668 (or 105664 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 344387816 is about 18557.6888647267. The cubic root of 344387816 is about 700.9428220705.

The spelling of 344387816 in words is "three hundred forty-four million, three hundred eighty-seven thousand, eight hundred sixteen".