346704399 has 24 divisors (see below), whose sum is σ = 513873360. Its totient is φ = 225130752.

The previous prime is 346704373. The next prime is 346704401. The reversal of 346704399 is 993407643.

It is a Cunningham number, because it is equal to 18620²-1.

It is not a de Polignac number, because 346704399 - 2¹¹ = 346702351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346704349) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 166537 + ... + 168605.

It is an arithmetic number, because the mean of its divisors is an integer number (21411390).

Almost surely, 2^346704399 is an apocalyptic number.

346704399 is a deficient number, since it is larger than the sum of its proper divisors (167168961).

346704399 is a wasteful number, since it uses less digits than its factorization.

346704399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 346704399 is about 18619.9999731472. Note that the first 4 decimals coincide. The cubic root of 346704399 is about 702.5109813677.

The spelling of 346704399 in words is "three hundred forty-six million, seven hundred four thousand, three hundred ninety-nine".