3864444306461 has 4 divisors (see below), whose sum is σ = 3864588094524. Its totient is φ = 3864300518400.

The previous prime is 3864444306451. The next prime is 3864444306473. The reversal of 3864444306461 is 1646034444683.

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 2051096587225 + 1813347719236 = 1432165^2 + 1346606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3864444306461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864444306451) 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, 71853710 + ... + 71907471.

It is an arithmetic number, because the mean of its divisors is an integer number (966147023631).

Almost surely, 2^{3864444306461} is an apocalyptic number.

It is an amenable number.

3864444306461 is a deficient number, since it is larger than the sum of its proper divisors (143788063).

3864444306461 is a wasteful number, since it uses less digits than its factorization.

3864444306461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143788062.

The product of its (nonzero) digits is 15925248, while the sum is 53.

The spelling of 3864444306461 in words is "three trillion, eight hundred sixty-four billion, four hundred forty-four million, three hundred six thousand, four hundred sixty-one".