3603949 has 4 divisors (see below), whose sum is σ = 3815964. Its totient is φ = 3391936.

The previous prime is 3603931. The next prime is 3603953. The reversal of 3603949 is 9493063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9493063 = 29 ⋅327347.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 1932100 = 1293^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 3603949 - 2⁹ = 3603437 is a prime.

It is a Duffinian number.

3603949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3603989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105982 + ... + 106015.

It is an arithmetic number, because the mean of its divisors is an integer number (953991).

Almost surely, 2^3603949 is an apocalyptic number.

It is an amenable number.

3603949 is a deficient number, since it is larger than the sum of its proper divisors (212015).

3603949 is a wasteful number, since it uses less digits than its factorization.

3603949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212014.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3603949 is about 1898.4069637462. The cubic root of 3603949 is about 153.3179059253.

The spelling of 3603949 in words is "three million, six hundred three thousand, nine hundred forty-nine".