3784329 has 6 divisors (see below), whose sum is σ = 5466266. Its totient is φ = 2522880.

The previous prime is 3784321. The next prime is 3784331. The reversal of 3784329 is 9234873.

It can be written as a sum of positive squares in only one way, i.e., 2624400 + 1159929 = 1620^2 + 1077^2 .

It is not a de Polignac number, because 3784329 - 2³ = 3784321 is a prime.

It is a super-2 number, since 2×3784329² = 28642291960482, which contains 22 as substring.

It is a Duffinian number.

3784329 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3784293 and 3784302.

It is not an unprimeable number, because it can be changed into a prime (3784321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210232 + ... + 210249.

Almost surely, 2^3784329 is an apocalyptic number.

It is an amenable number.

3784329 is a deficient number, since it is larger than the sum of its proper divisors (1681937).

3784329 is a wasteful number, since it uses less digits than its factorization.

3784329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420487 (or 420484 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 3784329 is about 1945.3351896267. The cubic root of 3784329 is about 155.8342667894.

The spelling of 3784329 in words is "three million, seven hundred eighty-four thousand, three hundred twenty-nine".