3649923 has 12 divisors (see below), whose sum is σ = 5293288. Its totient is φ = 2423520.

The previous prime is 3649913. The next prime is 3649931. The reversal of 3649923 is 3299463.

It is a happy number.

3649923 is a `hidden beast` number, since 3 + 649 + 9 + 2 + 3 = 666.

It is not a de Polignac number, because 3649923 - 2⁴ = 3649907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2103 + ... + 3423.

Almost surely, 2^3649923 is an apocalyptic number.

3649923 is a deficient number, since it is larger than the sum of its proper divisors (1643365).

3649923 is a wasteful number, since it uses less digits than its factorization.

3649923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634 (or 1631 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3649923 is about 1910.4771655270. The cubic root of 3649923 is about 153.9670897235.

The spelling of 3649923 in words is "three million, six hundred forty-nine thousand, nine hundred twenty-three".