3820997 has 2 divisors, whose sum is σ = 3820998. Its totient is φ = 3820996.

The previous prime is 3820987. The next prime is 3821003. The reversal of 3820997 is 7990283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3500641 + 320356 = 1871^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 3820997 - 2⁶ = 3820933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3820997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3820987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910498 + 1910499.

It is an arithmetic number, because the mean of its divisors is an integer number (1910499).

Almost surely, 2^3820997 is an apocalyptic number.

It is an amenable number.

3820997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3820997 is an equidigital number, since it uses as much as digits as its factorization.

3820997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3820997 is about 1954.7370667177. The cubic root of 3820997 is about 156.3359650687.

The spelling of 3820997 in words is "three million, eight hundred twenty thousand, nine hundred ninety-seven".