3906694443 has 16 divisors (see below), whose sum is σ = 5537376000. Its totient is φ = 2442952800.

The previous prime is 3906694439. The next prime is 3906694459. The reversal of 3906694443 is 3444966093.

It is not a de Polignac number, because 3906694443 - 2² = 3906694439 is a prime.

It is a super-2 number, since 2×3906694443² = 30524522941934160498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3906694392 and 3906694401.

It is not an unprimeable number, because it can be changed into a prime (3906694343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333543 + ... + 345056.

It is an arithmetic number, because the mean of its divisors is an integer number (346086000).

Almost surely, 2^3906694443 is an apocalyptic number.

3906694443 is a deficient number, since it is larger than the sum of its proper divisors (1630681557).

3906694443 is a wasteful number, since it uses less digits than its factorization.

3906694443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678722.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The square root of 3906694443 is about 62503.5554428706. Note that the first 3 decimals coincide. The cubic root of 3906694443 is about 1574.9610394998.

The spelling of 3906694443 in words is "three billion, nine hundred six million, six hundred ninety-four thousand, four hundred forty-three".