3649423 has 4 divisors (see below), whose sum is σ = 3703960. Its totient is φ = 3594888.

The previous prime is 3649417. The next prime is 3649469. The reversal of 3649423 is 3249463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649423 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 6⁴ + 4⁸ + 9³ + 4⁹ + 2¹⁷ + 3¹³ .

It is a Duffinian number.

3649423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649403) 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, 27168 + ... + 27301.

It is an arithmetic number, because the mean of its divisors is an integer number (925990).

Almost surely, 2^3649423 is an apocalyptic number.

3649423 is a deficient number, since it is larger than the sum of its proper divisors (54537).

3649423 is an equidigital number, since it uses as much as digits as its factorization.

3649423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54536.

The product of its digits is 15552, while the sum is 31.

The square root of 3649423 is about 1910.3463036842. The cubic root of 3649423 is about 153.9600587934.

The spelling of 3649423 in words is "three million, six hundred forty-nine thousand, four hundred twenty-three".