3709217 has 4 divisors (see below), whose sum is σ = 3721236. Its totient is φ = 3697200.

The previous prime is 3709163. The next prime is 3709249. The reversal of 3709217 is 7129073.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7129073 = 7 ⋅1018439.

It can be written as a sum of positive squares in 2 ways, for example, as 1401856 + 2307361 = 1184^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3709217 - 2⁸ = 3708961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3709217.

It is not an unprimeable number, because it can be changed into a prime (3709117) 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, 5534 + ... + 6167.

It is an arithmetic number, because the mean of its divisors is an integer number (930309).

Almost surely, 2^3709217 is an apocalyptic number.

It is an amenable number.

3709217 is a deficient number, since it is larger than the sum of its proper divisors (12019).

3709217 is a wasteful number, since it uses less digits than its factorization.

3709217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12018.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 3709217 is about 1925.9327610278. The cubic root of 3709217 is about 154.7963610884.

The spelling of 3709217 in words is "three million, seven hundred nine thousand, two hundred seventeen".