3649219 has 4 divisors (see below), whose sum is σ = 4170544. Its totient is φ = 3127896.

The previous prime is 3649207. The next prime is 3649229. The reversal of 3649219 is 9129463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9129463 = 7 ⋅1304209.

It is a cyclic number.

It is not a de Polignac number, because 3649219 - 2⁹ = 3648707 is a prime.

It is a super-2 number, since 2×3649219² = 26633598619922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3649229) 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, 260652 + ... + 260665.

It is an arithmetic number, because the mean of its divisors is an integer number (1042636).

Almost surely, 2^3649219 is an apocalyptic number.

3649219 is a deficient number, since it is larger than the sum of its proper divisors (521325).

3649219 is an equidigital number, since it uses as much as digits as its factorization.

3649219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521324.

The product of its digits is 11664, while the sum is 34.

The square root of 3649219 is about 1910.2929094775. The cubic root of 3649219 is about 153.9571899895.

The spelling of 3649219 in words is "three million, six hundred forty-nine thousand, two hundred nineteen".