343489766399 has 16 divisors (see below), whose sum is σ = 372376167072. Its totient is φ = 314956556928.

The previous prime is 343489766369. The next prime is 343489766419. The reversal of 343489766399 is 993667984343.

It is a happy number.

It is a Cunningham number, because it is equal to 586080²-1.

It is not a de Polignac number, because 343489766399 - 2³⁶ = 274770289663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343489766369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7596512 + ... + 7641594.

It is an arithmetic number, because the mean of its divisors is an integer number (23273510442).

Almost surely, 2^343489766399 is an apocalyptic number.

343489766399 is a deficient number, since it is larger than the sum of its proper divisors (28886400673).

343489766399 is a wasteful number, since it uses less digits than its factorization.

343489766399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48986.

The product of its digits is 634894848, while the sum is 71.

The spelling of 343489766399 in words is "three hundred forty-three billion, four hundred eighty-nine million, seven hundred sixty-six thousand, three hundred ninety-nine".