340499009 has 4 divisors (see below), whose sum is σ = 351482880. Its totient is φ = 329515140.

The previous prime is 340498913. The next prime is 340499039. The reversal of 340499009 is 900994043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900994043 = 22901 ⋅39343.

It is a cyclic number.

It is not a de Polignac number, because 340499009 - 2²⁴ = 323721793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340499039) 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, 5491889 + ... + 5491950.

It is an arithmetic number, because the mean of its divisors is an integer number (87870720).

Almost surely, 2^340499009 is an apocalyptic number.

It is an amenable number.

340499009 is a deficient number, since it is larger than the sum of its proper divisors (10983871).

340499009 is a wasteful number, since it uses less digits than its factorization.

340499009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10983870.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 340499009 is about 18452.6152347032. The cubic root of 340499009 is about 698.2944935928.

The spelling of 340499009 in words is "three hundred forty million, four hundred ninety-nine thousand, nine".