3940211649 has 16 divisors (see below), whose sum is σ = 5795616960. Its totient is φ = 2361173760.

The previous prime is 3940211633. The next prime is 3940211651. The reversal of 3940211649 is 9461120493.

It is not a de Polignac number, because 3940211649 - 2⁴ = 3940211633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3940211629) 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, 667852 + ... + 673725.

It is an arithmetic number, because the mean of its divisors is an integer number (362226060).

Almost surely, 2^3940211649 is an apocalyptic number.

It is an amenable number.

3940211649 is a deficient number, since it is larger than the sum of its proper divisors (1855405311).

3940211649 is a wasteful number, since it uses less digits than its factorization.

3940211649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341680.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3940211649 is about 62771.1052077307. The cubic root of 3940211649 is about 1579.4523083006.

The spelling of 3940211649 in words is "three billion, nine hundred forty million, two hundred eleven thousand, six hundred forty-nine".