3897769 has 4 divisors (see below), whose sum is σ = 3906900. Its totient is φ = 3888640.

The previous prime is 3897749. The next prime is 3897797. The reversal of 3897769 is 9677983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 1075369 = 1680^2 + 1037^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897769 - 2¹¹ = 3895721 is a prime.

It is a super-2 number, since 2×3897769² = 30385206354722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3897739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3892 + ... + 4789.

It is an arithmetic number, because the mean of its divisors is an integer number (976725).

Almost surely, 2^3897769 is an apocalyptic number.

It is an amenable number.

3897769 is a deficient number, since it is larger than the sum of its proper divisors (9131).

3897769 is an equidigital number, since it uses as much as digits as its factorization.

3897769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130.

The product of its digits is 571536, while the sum is 49.

The square root of 3897769 is about 1974.2768296265. The cubic root of 3897769 is about 157.3760711525.

Subtracting from 3897769 its product of digits (571536), we obtain a palindrome (3326233).

The spelling of 3897769 in words is "three million, eight hundred ninety-seven thousand, seven hundred sixty-nine".