3820447 has 2 divisors, whose sum is σ = 3820448. Its totient is φ = 3820446.

The previous prime is 3820441. The next prime is 3820457. The reversal of 3820447 is 7440283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3820447 - 2⁷ = 3820319 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3820441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910223 + 1910224.

It is an arithmetic number, because the mean of its divisors is an integer number (1910224).

Almost surely, 2^3820447 is an apocalyptic number.

3820447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3820447 is an equidigital number, since it uses as much as digits as its factorization.

3820447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3820447 is about 1954.5963777721. The cubic root of 3820447 is about 156.3284636315.

The spelling of 3820447 in words is "three million, eight hundred twenty thousand, four hundred forty-seven".