3652309 has 4 divisors (see below), whose sum is σ = 3656416. Its totient is φ = 3648204.

The previous prime is 3652303. The next prime is 3652333. The reversal of 3652309 is 9032563.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9032563 = 31 ⋅291373.

It is a cyclic number.

It is not a de Polignac number, because 3652309 - 2⁹ = 3651797 is a prime.

It is a super-2 number, since 2×3652309² = 26678722062962, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3652303) 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, 99 + ... + 2704.

It is an arithmetic number, because the mean of its divisors is an integer number (914104).

Almost surely, 2^3652309 is an apocalyptic number.

It is an amenable number.

3652309 is a deficient number, since it is larger than the sum of its proper divisors (4107).

3652309 is a wasteful number, since it uses less digits than its factorization.

3652309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 3652309 is about 1911.1015148338. The cubic root of 3652309 is about 154.0006324818. Note that the first 3 decimals are identical.

The spelling of 3652309 in words is "three million, six hundred fifty-two thousand, three hundred nine".