3928766655 has 16 divisors (see below), whose sum is σ = 6857483904. Its totient is φ = 1904856480.

The previous prime is 3928766609. The next prime is 3928766687. The reversal of 3928766655 is 5566678293.

It is a happy number.

It is not a de Polignac number, because 3928766655 - 2¹⁴ = 3928750271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3928766595 and 3928766604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11905189 + ... + 11905518.

It is an arithmetic number, because the mean of its divisors is an integer number (428592744).

Almost surely, 2^3928766655 is an apocalyptic number.

3928766655 is a deficient number, since it is larger than the sum of its proper divisors (2928717249).

3928766655 is a wasteful number, since it uses less digits than its factorization.

3928766655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23810726.

The product of its digits is 16329600, while the sum is 57.

The square root of 3928766655 is about 62679.8744015972. The cubic root of 3928766655 is about 1577.9215654140.

The spelling of 3928766655 in words is "three billion, nine hundred twenty-eight million, seven hundred sixty-six thousand, six hundred fifty-five".