3897761 has 4 divisors (see below), whose sum is σ = 4454592. Its totient is φ = 3340932.

The previous prime is 3897749. The next prime is 3897797. The reversal of 3897761 is 1677983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1677983 = 827 ⋅2029.

It is not a de Polignac number, because 3897761 - 2¹⁸ = 3635617 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (3897721) 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, 278405 + ... + 278418.

It is an arithmetic number, because the mean of its divisors is an integer number (1113648).

Almost surely, 2^3897761 is an apocalyptic number.

It is an amenable number.

3897761 is a deficient number, since it is larger than the sum of its proper divisors (556831).

3897761 is an equidigital number, since it uses as much as digits as its factorization.

3897761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556830.

The product of its digits is 63504, while the sum is 41.

The square root of 3897761 is about 1974.2748035671. The cubic root of 3897761 is about 157.3759634832.

The spelling of 3897761 in words is "three million, eight hundred ninety-seven thousand, seven hundred sixty-one".