3949623321 has 16 divisors (see below), whose sum is σ = 6020131200. Its totient is φ = 2256306048.

The previous prime is 3949623283. The next prime is 3949623323. The reversal of 3949623321 is 1233269493.

It is not a de Polignac number, because 3949623321 - 2⁶ = 3949623257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3949623323) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58575 + ... + 106443.

It is an arithmetic number, because the mean of its divisors is an integer number (376258200).

Almost surely, 2^3949623321 is an apocalyptic number.

It is an amenable number.

3949623321 is a deficient number, since it is larger than the sum of its proper divisors (2070507879).

3949623321 is a wasteful number, since it uses less digits than its factorization.

3949623321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51808.

The product of its digits is 209952, while the sum is 42.

The square root of 3949623321 is about 62846.0286812142. The cubic root of 3949623321 is about 1580.7088792858.

The spelling of 3949623321 in words is "three billion, nine hundred forty-nine million, six hundred twenty-three thousand, three hundred twenty-one".