3897449 has 2 divisors, whose sum is σ = 3897450. Its totient is φ = 3897448.

The previous prime is 3897409. The next prime is 3897463. The reversal of 3897449 is 9447983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 67600 = 1957^2 + 260^2 .

It is an emirp because it is prime and its reverse (9447983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3897449 - 2¹² = 3893353 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (3897409) 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, 1948724 + 1948725.

It is an arithmetic number, because the mean of its divisors is an integer number (1948725).

Almost surely, 2^3897449 is an apocalyptic number.

It is an amenable number.

3897449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897449 is an equidigital number, since it uses as much as digits as its factorization.

3897449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 3897449 is about 1974.1957856302. The cubic root of 3897449 is about 157.3717642681.

The spelling of 3897449 in words is "three million, eight hundred ninety-seven thousand, four hundred forty-nine".