3856640441 has 8 divisors (see below), whose sum is σ = 3951725568. Its totient is φ = 3761604000.

The previous prime is 3856640423. The next prime is 3856640461. The reversal of 3856640441 is 1440466583.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3856640441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3856640461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188336 + ... + 207806.

It is an arithmetic number, because the mean of its divisors is an integer number (493965696).

Almost surely, 2^3856640441 is an apocalyptic number.

It is an amenable number.

3856640441 is a deficient number, since it is larger than the sum of its proper divisors (95085127).

3856640441 is a wasteful number, since it uses less digits than its factorization.

3856640441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24343.

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 3856640441 is about 62101.8553748598. The cubic root of 3856640441 is about 1568.2057803874.

The spelling of 3856640441 in words is "three billion, eight hundred fifty-six million, six hundred forty thousand, four hundred forty-one".