344389678 has 4 divisors (see below), whose sum is σ = 516584520. Its totient is φ = 172194838.

The previous prime is 344389657. The next prime is 344389681. The reversal of 344389678 is 876983443.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86097418 + ... + 86097421.

It is an arithmetic number, because the mean of its divisors is an integer number (129146130).

Almost surely, 2^344389678 is an apocalyptic number.

344389678 is a deficient number, since it is larger than the sum of its proper divisors (172194842).

344389678 is a wasteful number, since it uses less digits than its factorization.

344389678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172194841.

The product of its digits is 3483648, while the sum is 52.

The square root of 344389678 is about 18557.7390325438. The cubic root of 344389678 is about 700.9440853297.

The spelling of 344389678 in words is "three hundred forty-four million, three hundred eighty-nine thousand, six hundred seventy-eight".