3928997833 has 4 divisors (see below), whose sum is σ = 3931053588. Its totient is φ = 3926942080.

The previous prime is 3928997801. The next prime is 3928997843. The reversal of 3928997833 is 3387998293.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3124027449 + 804970384 = 55893^2 + 28372^2 .

It is a cyclic number.

It is not a de Polignac number, because 3928997833 - 2⁵ = 3928997801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3928997843) 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, 1025008 + ... + 1028833.

It is an arithmetic number, because the mean of its divisors is an integer number (982763397).

Almost surely, 2^3928997833 is an apocalyptic number.

It is an amenable number.

3928997833 is a deficient number, since it is larger than the sum of its proper divisors (2055755).

3928997833 is a wasteful number, since it uses less digits than its factorization.

3928997833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055754.

The product of its digits is 17635968, while the sum is 61.

The square root of 3928997833 is about 62681.7184911199. The cubic root of 3928997833 is about 1577.9525143630.

The spelling of 3928997833 in words is "three billion, nine hundred twenty-eight million, nine hundred ninety-seven thousand, eight hundred thirty-three".