340067839 has 4 divisors (see below), whose sum is σ = 342550224. Its totient is φ = 337585456.

The previous prime is 340067821. The next prime is 340067869. The reversal of 340067839 is 938760043.

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

It is a cyclic number.

It is not a de Polignac number, because 340067839 - 2²¹ = 337970687 is a prime.

It is a super-2 number, since 2×340067839² = 231292270244259842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340067869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240987 + ... + 1241260.

It is an arithmetic number, because the mean of its divisors is an integer number (85637556).

Almost surely, 2^340067839 is an apocalyptic number.

340067839 is a deficient number, since it is larger than the sum of its proper divisors (2482385).

340067839 is a wasteful number, since it uses less digits than its factorization.

340067839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482384.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 340067839 is about 18440.9283660015. The cubic root of 340067839 is about 697.9996216504. Note that the first 3 decimals are identical.

The spelling of 340067839 in words is "three hundred forty million, sixty-seven thousand, eight hundred thirty-nine".