3650909 has 4 divisors (see below), whose sum is σ = 3666300. Its totient is φ = 3635520.

The previous prime is 3650887. The next prime is 3650929. The reversal of 3650909 is 9090563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9090563 = 17 ⋅534739.

It can be written as a sum of positive squares in 2 ways, for example, as 2656900 + 994009 = 1630^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 3650909 - 2²⁰ = 2602333 is a prime.

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

It is a Duffinian number.

3650909 is a modest number, since divided by 909 gives 365 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3650929) 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, 7334 + ... + 7815.

It is an arithmetic number, because the mean of its divisors is an integer number (916575).

Almost surely, 2^3650909 is an apocalyptic number.

It is an amenable number.

3650909 is a deficient number, since it is larger than the sum of its proper divisors (15391).

3650909 is a wasteful number, since it uses less digits than its factorization.

3650909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15390.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 3650909 is about 1910.7351988175. The cubic root of 3650909 is about 153.9809528363.

The spelling of 3650909 in words is "three million, six hundred fifty thousand, nine hundred nine".