3649799 has 4 divisors (see below), whose sum is σ = 3711720. Its totient is φ = 3587880.

The previous prime is 3649777. The next prime is 3649831. The reversal of 3649799 is 9979463.

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

It is a cyclic number.

It is not a de Polignac number, because 3649799 - 2¹² = 3645703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649699) 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, 30872 + ... + 30989.

It is an arithmetic number, because the mean of its divisors is an integer number (927930).

Almost surely, 2^3649799 is an apocalyptic number.

3649799 is a deficient number, since it is larger than the sum of its proper divisors (61921).

3649799 is an equidigital number, since it uses as much as digits as its factorization.

3649799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61920.

The product of its digits is 367416, while the sum is 47.

The square root of 3649799 is about 1910.4447126258. Note that the first 3 decimals coincide. The cubic root of 3649799 is about 153.9653461127.

The spelling of 3649799 in words is "three million, six hundred forty-nine thousand, seven hundred ninety-nine".