3398660509 has 4 divisors (see below), whose sum is σ = 3399364540. Its totient is φ = 3397956480.

The previous prime is 3398660491. The next prime is 3398660521. The reversal of 3398660509 is 9050668933.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2630151225 + 768509284 = 51285^2 + 27722^2 .

It is a cyclic number.

It is not a de Polignac number, because 3398660509 - 2¹³ = 3398652317 is a prime.

It is a super-2 number, since 2×3398660509² = 23101786510872278162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3398660579) 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 3 ways as a sum of consecutive naturals, for example, 344724 + ... + 354445.

It is an arithmetic number, because the mean of its divisors is an integer number (849841135).

Almost surely, 2^3398660509 is an apocalyptic number.

It is an amenable number.

3398660509 is a deficient number, since it is larger than the sum of its proper divisors (704031).

3398660509 is an equidigital number, since it uses as much as digits as its factorization.

3398660509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704030.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 3398660509 is about 58298.0317763816. The cubic root of 3398660509 is about 1503.4971011124.

The spelling of 3398660509 in words is "three billion, three hundred ninety-eight million, six hundred sixty thousand, five hundred nine".