3928299869 has 4 divisors (see below), whose sum is σ = 4230476796. Its totient is φ = 3626122944.

The previous prime is 3928299737. The next prime is 3928299901. The reversal of 3928299869 is 9689928293.

3928299869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9689928293 = 199 ⋅48693107.

It can be written as a sum of positive squares in 2 ways, for example, as 359671225 + 3568628644 = 18965^2 + 59738^2 .

It is a cyclic number.

It is not a de Polignac number, because 3928299869 - 2²⁴ = 3911522653 is a prime.

It is a super-2 number, since 2×3928299869² = 30863079721570834322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928299169) 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, 151088444 + ... + 151088469.

It is an arithmetic number, because the mean of its divisors is an integer number (1057619199).

Almost surely, 2^3928299869 is an apocalyptic number.

It is an amenable number.

3928299869 is a deficient number, since it is larger than the sum of its proper divisors (302176927).

3928299869 is a wasteful number, since it uses less digits than its factorization.

3928299869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302176926.

The product of its digits is 30233088, while the sum is 65.

The square root of 3928299869 is about 62676.1507193925. The cubic root of 3928299869 is about 1577.8590707490.

The spelling of 3928299869 in words is "three billion, nine hundred twenty-eight million, two hundred ninety-nine thousand, eight hundred sixty-nine".