3944329 has 2 divisors, whose sum is σ = 3944330. Its totient is φ = 3944328.

The previous prime is 3944309. The next prime is 3944351. The reversal of 3944329 is 9234493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2108304 + 1836025 = 1452^2 + 1355^2 .

It is an emirp because it is prime and its reverse (9234493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3944329 - 2¹³ = 3936137 is a prime.

3944329 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3944294 and 3944303.

It is not a weakly prime, because it can be changed into another prime (3944309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972164 + 1972165.

It is an arithmetic number, because the mean of its divisors is an integer number (1972165).

Almost surely, 2^3944329 is an apocalyptic number.

It is an amenable number.

3944329 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944329 is an equidigital number, since it uses as much as digits as its factorization.

3944329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 3944329 is about 1986.0334841085. The cubic root of 3944329 is about 158.0002269932. Note that the first 3 decimals are identical.

The spelling of 3944329 in words is "three million, nine hundred forty-four thousand, three hundred twenty-nine".