3943406946 has 16 divisors (see below), whose sum is σ = 8301909600. Its totient is φ = 1245286368.

The previous prime is 3943406917. The next prime is 3943406959. The reversal of 3943406946 is 6496043493.

It is a super-2 number, since 2×3943406946² = 31100916683522093832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3943406895 and 3943406904.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17295531 + ... + 17295758.

It is an arithmetic number, because the mean of its divisors is an integer number (518869350).

Almost surely, 2^3943406946 is an apocalyptic number.

3943406946 is an abundant number, since it is smaller than the sum of its proper divisors (4358502654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3943406946 is a wasteful number, since it uses less digits than its factorization.

3943406946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34591313.

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

The square root of 3943406946 is about 62796.5520231804. The cubic root of 3943406946 is about 1579.8791428680.

It can be divided in two parts, 394340694 and 6, that multiplied together give a square (2366044164 = 48642²).

The spelling of 3943406946 in words is "three billion, nine hundred forty-three million, four hundred six thousand, nine hundred forty-six".