340199999 has 4 divisors (see below), whose sum is σ = 340349520. Its totient is φ = 340050480.

The previous prime is 340199987. The next prime is 340200011. The reversal of 340199999 is 999991043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999991043 = 10337 ⋅96739.

It is an interprime number because it is at equal distance from previous prime (340199987) and next prime (340200011).

It is a cyclic number.

It is not a de Polignac number, because 340199999 - 2¹⁶ = 340134463 is a prime.

It is a Duffinian number.

340199999 is a modest number, since divided by 99999 gives 3401 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 340199999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340199939) 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, 71294 + ... + 75915.

It is an arithmetic number, because the mean of its divisors is an integer number (85087380).

Almost surely, 2^340199999 is an apocalyptic number.

340199999 is a deficient number, since it is larger than the sum of its proper divisors (149521).

340199999 is a wasteful number, since it uses less digits than its factorization.

340199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149520.

The product of its (nonzero) digits is 708588, while the sum is 53.

The square root of 340199999 is about 18444.5113516189. The cubic root of 340199999 is about 698.0900307512.

The spelling of 340199999 in words is "three hundred forty million, one hundred ninety-nine thousand, nine hundred ninety-nine".