4051489 has 4 divisors (see below), whose sum is σ = 4363156. Its totient is φ = 3739824.

The previous prime is 4051477. The next prime is 4051499. The reversal of 4051489 is 9841504.

It is a happy number.

4051489 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2689600 + 1361889 = 1640^2 + 1167^2 .

It is a cyclic number.

It is not a de Polignac number, because 4051489 - 2⁷ = 4051361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4051489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4051429) 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, 155814 + ... + 155839.

It is an arithmetic number, because the mean of its divisors is an integer number (1090789).

Almost surely, 2^4051489 is an apocalyptic number.

It is an amenable number.

4051489 is a deficient number, since it is larger than the sum of its proper divisors (311667).

4051489 is a wasteful number, since it uses less digits than its factorization.

4051489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311666.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4051489 is about 2012.8310907774. The cubic root of 4051489 is about 159.4183175346.

It can be divided in two parts, 40 and 51489, that added together give a square (51529 = 227²).

The spelling of 4051489 in words is "four million, fifty-one thousand, four hundred eighty-nine".