3913229 has 4 divisors (see below), whose sum is σ = 3923484. Its totient is φ = 3902976.

The previous prime is 3913199. The next prime is 3913237. The reversal of 3913229 is 9223193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9223193 = 7 ⋅1317599.

It can be written as a sum of positive squares in 2 ways, for example, as 2036329 + 1876900 = 1427^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 3913229 - 2⁸ = 3912973 is a prime.

It is a super-2 number, since 2×3913229² = 30626722412882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913249) 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 3 ways as a sum of consecutive naturals, for example, 4532 + ... + 5325.

It is an arithmetic number, because the mean of its divisors is an integer number (980871).

Almost surely, 2^3913229 is an apocalyptic number.

It is an amenable number.

3913229 is a deficient number, since it is larger than the sum of its proper divisors (10255).

3913229 is an equidigital number, since it uses as much as digits as its factorization.

3913229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10254.

The product of its digits is 2916, while the sum is 29.

The square root of 3913229 is about 1978.1883125729. The cubic root of 3913229 is about 157.5838673180.

The spelling of 3913229 in words is "three million, nine hundred thirteen thousand, two hundred twenty-nine".