3509406169 has 8 divisors (see below), whose sum is σ = 3717386568. Its totient is φ = 3301597440.

The previous prime is 3509406167. The next prime is 3509406209. The reversal of 3509406169 is 9616049053.

3509406169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1715036569 + 1794369600 = 41413^2 + 42360^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3509406169 - 2¹ = 3509406167 is a prime.

It is a super-2 number, since 2×3509406169² = 24631863318030513122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3509406167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 83779.

It is an arithmetic number, because the mean of its divisors is an integer number (464673321).

Almost surely, 2^3509406169 is an apocalyptic number.

It is an amenable number.

3509406169 is a deficient number, since it is larger than the sum of its proper divisors (207980399).

3509406169 is a wasteful number, since it uses less digits than its factorization.

3509406169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85835.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 3509406169 is about 59240.2411288138. The cubic root of 3509406169 is about 1519.6533964148.

The spelling of 3509406169 in words is "three billion, five hundred nine million, four hundred six thousand, one hundred sixty-nine".