3720449 has 4 divisors (see below), whose sum is σ = 3726036. Its totient is φ = 3714864.

The previous prime is 3720427. The next prime is 3720469. The reversal of 3720449 is 9440273.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1364224 + 2356225 = 1168^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720449 - 2¹⁶ = 3654913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720469) 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, 1634 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (931509).

Almost surely, 2^3720449 is an apocalyptic number.

It is an amenable number.

3720449 is a deficient number, since it is larger than the sum of its proper divisors (5587).

3720449 is an equidigital number, since it uses as much as digits as its factorization.

3720449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3720449 is about 1928.8465465143. The cubic root of 3720449 is about 154.9524515964.

The spelling of 3720449 in words is "three million, seven hundred twenty thousand, four hundred forty-nine".