343640479 has 24 divisors (see below), whose sum is σ = 453168240. Its totient is φ = 257572224.

The previous prime is 343640467. The next prime is 343640527. The reversal of 343640479 is 974046343.

It is not a de Polignac number, because 343640479 - 2¹⁷ = 343509407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343640449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2094 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (18882010).

Almost surely, 2^343640479 is an apocalyptic number.

343640479 is a deficient number, since it is larger than the sum of its proper divisors (109527761).

343640479 is a wasteful number, since it uses less digits than its factorization.

343640479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28439 (or 28432 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 343640479 is about 18537.5424207202. The cubic root of 343640479 is about 700.4354290889.

The spelling of 343640479 in words is "three hundred forty-three million, six hundred forty thousand, four hundred seventy-nine".