344689438 has 4 divisors (see below), whose sum is σ = 517034160. Its totient is φ = 172344718.

The previous prime is 344689409. The next prime is 344689439. The reversal of 344689438 is 834986443.

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

It is a junction number, because it is equal to n+sod(n) for n = 344689391 and 344689400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344689439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86172358 + ... + 86172361.

It is an arithmetic number, because the mean of its divisors is an integer number (129258540).

Almost surely, 2^344689438 is an apocalyptic number.

344689438 is a deficient number, since it is larger than the sum of its proper divisors (172344722).

344689438 is a wasteful number, since it uses less digits than its factorization.

344689438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172344721.

The product of its digits is 1990656, while the sum is 49.

The square root of 344689438 is about 18565.8136907597. The cubic root of 344689438 is about 701.1473957847.

The spelling of 344689438 in words is "three hundred forty-four million, six hundred eighty-nine thousand, four hundred thirty-eight".