3649955 has 4 divisors (see below), whose sum is σ = 4379952. Its totient is φ = 2919960.

The previous prime is 3649949. The next prime is 3649967. The reversal of 3649955 is 5599463.

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

It is not a de Polignac number, because 3649955 - 2⁸ = 3649699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364991 + ... + 365000.

It is an arithmetic number, because the mean of its divisors is an integer number (1094988).

Almost surely, 2^3649955 is an apocalyptic number.

3649955 is a deficient number, since it is larger than the sum of its proper divisors (729997).

3649955 is an equidigital number, since it uses as much as digits as its factorization.

3649955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729996.

The product of its digits is 145800, while the sum is 41.

The square root of 3649955 is about 1910.4855403797. The cubic root of 3649955 is about 153.9675396812.

The spelling of 3649955 in words is "three million, six hundred forty-nine thousand, nine hundred fifty-five".