3939677321 has 2 divisors, whose sum is σ = 3939677322. Its totient is φ = 3939677320.

The previous prime is 3939677317. The next prime is 3939677437. The reversal of 3939677321 is 1237769393.

3939677321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3512221696 + 427455625 = 59264^2 + 20675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3939677321 - 2² = 3939677317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3939677321.

It is not a weakly prime, because it can be changed into another prime (3939677311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969838660 + 1969838661.

It is an arithmetic number, because the mean of its divisors is an integer number (1969838661).

Almost surely, 2^3939677321 is an apocalyptic number.

It is an amenable number.

3939677321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3939677321 is an equidigital number, since it uses as much as digits as its factorization.

3939677321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 50.

The square root of 3939677321 is about 62766.8489013110. The cubic root of 3939677321 is about 1579.3809091119.

The spelling of 3939677321 in words is "three billion, nine hundred thirty-nine million, six hundred seventy-seven thousand, three hundred twenty-one".