3721449 has 4 divisors (see below), whose sum is σ = 4961936. Its totient is φ = 2480964.

The previous prime is 3721439. The next prime is 3721451. The reversal of 3721449 is 9441273.

It is a happy number.

3721449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3721449 - 2¹⁵ = 3688681 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3721409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620239 + ... + 620244.

It is an arithmetic number, because the mean of its divisors is an integer number (1240484).

Almost surely, 2^3721449 is an apocalyptic number.

It is an amenable number.

3721449 is a deficient number, since it is larger than the sum of its proper divisors (1240487).

3721449 is a wasteful number, since it uses less digits than its factorization.

3721449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240486.

The product of its digits is 6048, while the sum is 30.

The square root of 3721449 is about 1929.1057513781. The cubic root of 3721449 is about 154.9663333054.

The spelling of 3721449 in words is "three million, seven hundred twenty-one thousand, four hundred forty-nine".