3906675021 has 16 divisors (see below), whose sum is σ = 5523799104. Its totient is φ = 2447472384.

The previous prime is 3906674969. The next prime is 3906675049. The reversal of 3906675021 is 1205766093.

3906675021 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3906675021 - 2⁹ = 3906674509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906675121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25351 + ... + 91956.

It is an arithmetic number, because the mean of its divisors is an integer number (345237444).

Almost surely, 2^3906675021 is an apocalyptic number.

It is an amenable number.

3906675021 is a deficient number, since it is larger than the sum of its proper divisors (1617124083).

3906675021 is a wasteful number, since it uses less digits than its factorization.

3906675021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117980.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 3906675021 is about 62503.4000755159. The cubic root of 3906675021 is about 1574.9584295402.

The spelling of 3906675021 in words is "three billion, nine hundred six million, six hundred seventy-five thousand, twenty-one".