3856340443 has 4 divisors (see below), whose sum is σ = 3861355960. Its totient is φ = 3851324928.

The previous prime is 3856340353. The next prime is 3856340447. The reversal of 3856340443 is 3440436583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3856340443 is a prime.

It is a super-2 number, since 2×3856340443² = 29742723224634872498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3856340396 and 3856340405.

It is not an unprimeable number, because it can be changed into a prime (3856340447) 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, 2506605 + ... + 2508142.

It is an arithmetic number, because the mean of its divisors is an integer number (965338990).

Almost surely, 2^3856340443 is an apocalyptic number.

3856340443 is a deficient number, since it is larger than the sum of its proper divisors (5015517).

3856340443 is an equidigital number, since it uses as much as digits as its factorization.

3856340443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015516.

The product of its (nonzero) digits is 414720, while the sum is 40.

The square root of 3856340443 is about 62099.4399572170. The cubic root of 3856340443 is about 1568.1651171207.

The spelling of 3856340443 in words is "three billion, eight hundred fifty-six million, three hundred forty thousand, four hundred forty-three".