3928891029 has 64 divisors (see below), whose sum is σ = 6594048000. Its totient is φ = 2028837888.

The previous prime is 3928891013. The next prime is 3928891033. The reversal of 3928891029 is 9201988293.

It is not a de Polignac number, because 3928891029 - 2⁴ = 3928891013 is a prime.

It is a super-3 number, since 3×3928891029³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928891009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2059294 + ... + 2061200.

It is an arithmetic number, because the mean of its divisors is an integer number (103032000).

Almost surely, 2^3928891029 is an apocalyptic number.

It is an amenable number.

3928891029 is a deficient number, since it is larger than the sum of its proper divisors (2665156971).

3928891029 is a wasteful number, since it uses less digits than its factorization.

3928891029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 3928891029 is about 62680.8665303855. The cubic root of 3928891029 is about 1577.9382161310.

The spelling of 3928891029 in words is "three billion, nine hundred twenty-eight million, eight hundred ninety-one thousand, twenty-nine".