3820961 has 4 divisors (see below), whose sum is σ = 3825300. Its totient is φ = 3816624.

The previous prime is 3820933. The next prime is 3820963. The reversal of 3820961 is 1690283.

3820961 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1690283 = 7 ⋅241469.

It can be written as a sum of positive squares in 2 ways, for example, as 2512225 + 1308736 = 1585^2 + 1144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3820961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820963) 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, 326 + ... + 2783.

It is an arithmetic number, because the mean of its divisors is an integer number (956325).

Almost surely, 2^3820961 is an apocalyptic number.

It is an amenable number.

3820961 is a deficient number, since it is larger than the sum of its proper divisors (4339).

3820961 is a wasteful number, since it uses less digits than its factorization.

3820961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3820961 is about 1954.7278582964. The cubic root of 3820961 is about 156.3354740876.

The spelling of 3820961 in words is "three million, eight hundred twenty thousand, nine hundred sixty-one".