3856436941 has 4 divisors (see below), whose sum is σ = 4407356512. Its totient is φ = 3305517372.

The previous prime is 3856436891. The next prime is 3856436957. The reversal of 3856436941 is 1496346583.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1496346583 = 131 ⋅11422493.

It is a cyclic number.

It is not a de Polignac number, because 3856436941 - 2⁷ = 3856436813 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 (3856436141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275459775 + ... + 275459788.

It is an arithmetic number, because the mean of its divisors is an integer number (1101839128).

Almost surely, 2^3856436941 is an apocalyptic number.

It is an amenable number.

3856436941 is a deficient number, since it is larger than the sum of its proper divisors (550919571).

3856436941 is an equidigital number, since it uses as much as digits as its factorization.

3856436941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550919570.

The product of its digits is 1866240, while the sum is 49.

The square root of 3856436941 is about 62100.2169158852. The cubic root of 3856436941 is about 1568.1781971843.

The spelling of 3856436941 in words is "three billion, eight hundred fifty-six million, four hundred thirty-six thousand, nine hundred forty-one".