3991928855 has 8 divisors (see below), whose sum is σ = 4850952000. Its totient is φ = 3153118176.

The previous prime is 3991928839. The next prime is 3991928867. The reversal of 3991928855 is 5588291993.

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 3991928855 - 2⁴ = 3991928839 is a prime.

It is a super-2 number, since 2×3991928855² = 31870991966763222050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3991928794 and 3991928803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5052680 + ... + 5053469.

It is an arithmetic number, because the mean of its divisors is an integer number (606369000).

Almost surely, 2^3991928855 is an apocalyptic number.

3991928855 is a deficient number, since it is larger than the sum of its proper divisors (859023145).

3991928855 is a wasteful number, since it uses less digits than its factorization.

3991928855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106233.

The product of its digits is 6998400, while the sum is 59.

The square root of 3991928855 is about 63181.7129793107. The cubic root of 3991928855 is about 1586.3326543744.

The spelling of 3991928855 in words is "three billion, nine hundred ninety-one million, nine hundred twenty-eight thousand, eight hundred fifty-five".