3843917849 has 4 divisors (see below), whose sum is σ = 4011044736. Its totient is φ = 3676790964.

The previous prime is 3843917807. The next prime is 3843917851. The reversal of 3843917849 is 9487193483.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3843917849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3843917794 and 3843917803.

It is not an unprimeable number, because it can be changed into a prime (3843917249) 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, 83563409 + ... + 83563454.

It is an arithmetic number, because the mean of its divisors is an integer number (1002761184).

Almost surely, 2^3843917849 is an apocalyptic number.

It is an amenable number.

3843917849 is a deficient number, since it is larger than the sum of its proper divisors (167126887).

3843917849 is a wasteful number, since it uses less digits than its factorization.

3843917849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167126886.

The product of its digits is 5225472, while the sum is 56.

The square root of 3843917849 is about 61999.3374883958. The cubic root of 3843917849 is about 1566.4794400425.

The spelling of 3843917849 in words is "three billion, eight hundred forty-three million, nine hundred seventeen thousand, eight hundred forty-nine".