3897237 has 4 divisors (see below), whose sum is σ = 5196320. Its totient is φ = 2598156.

The previous prime is 3897217. The next prime is 3897241. The reversal of 3897237 is 7327983.

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.

It is not a de Polignac number, because 3897237 - 2¹⁴ = 3880853 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3897195 and 3897204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897217) 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, 649537 + ... + 649542.

It is an arithmetic number, because the mean of its divisors is an integer number (1299080).

Almost surely, 2^3897237 is an apocalyptic number.

It is an amenable number.

3897237 is a deficient number, since it is larger than the sum of its proper divisors (1299083).

3897237 is a wasteful number, since it uses less digits than its factorization.

3897237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299082.

The product of its digits is 63504, while the sum is 39.

The square root of 3897237 is about 1974.1420921504. The cubic root of 3897237 is about 157.3689108274.

It can be divided in two parts, 389 and 7237, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 3897237 in words is "three million, eight hundred ninety-seven thousand, two hundred thirty-seven".