3781229 has 2 divisors, whose sum is σ = 3781230. Its totient is φ = 3781228.

The previous prime is 3781213. The next prime is 3781237. The reversal of 3781229 is 9221873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2256004 + 1525225 = 1502^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781229 - 2⁴ = 3781213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3781195 and 3781204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781249) 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 as a sum of consecutive naturals, namely, 1890614 + 1890615.

It is an arithmetic number, because the mean of its divisors is an integer number (1890615).

Almost surely, 2^3781229 is an apocalyptic number.

It is an amenable number.

3781229 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781229 is an equidigital number, since it uses as much as digits as its factorization.

3781229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 3781229 is about 1944.5382485310. The cubic root of 3781229 is about 155.7917037004.

The spelling of 3781229 in words is "three million, seven hundred eighty-one thousand, two hundred twenty-nine".