3989544851 has 8 divisors (see below), whose sum is σ = 4090673664. Its totient is φ = 3889093000.

The previous prime is 3989544847. The next prime is 3989544857. The reversal of 3989544851 is 1584459893.

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

It is a cyclic number.

It is not a de Polignac number, because 3989544851 - 2² = 3989544847 is a prime.

It is a super-2 number, since 2×3989544851² = 31832936236281224402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989544857) 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, 157295 + ... + 180888.

It is an arithmetic number, because the mean of its divisors is an integer number (511334208).

Almost surely, 2^3989544851 is an apocalyptic number.

3989544851 is a deficient number, since it is larger than the sum of its proper divisors (101128813).

3989544851 is a wasteful number, since it uses less digits than its factorization.

3989544851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338481.

The product of its digits is 6220800, while the sum is 56.

The square root of 3989544851 is about 63162.8439115909. The cubic root of 3989544851 is about 1586.0168023453.

The spelling of 3989544851 in words is "three billion, nine hundred eighty-nine million, five hundred forty-four thousand, eight hundred fifty-one".