3897653 has 2 divisors, whose sum is σ = 3897654. Its totient is φ = 3897652.

The previous prime is 3897637. The next prime is 3897659. The reversal of 3897653 is 3567983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2053489 + 1844164 = 1433^2 + 1358^2 .

It is an emirp because it is prime and its reverse (3567983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3897653 - 2⁴ = 3897637 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3 + 8⁷ + 9² + 7⁶ + 6⁸ + 5⁵ + 3³ .

It is a self number, because there is not a number n which added to its sum of digits gives 3897653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3897659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1948826 + 1948827.

It is an arithmetic number, because the mean of its divisors is an integer number (1948827).

Almost surely, 2^3897653 is an apocalyptic number.

It is an amenable number.

3897653 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897653 is an equidigital number, since it uses as much as digits as its factorization.

3897653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 3897653 is about 1974.2474515622. The cubic root of 3897653 is about 157.3745099341.

The spelling of 3897653 in words is "three million, eight hundred ninety-seven thousand, six hundred fifty-three".