43897 has 4 divisors (see below), whose sum is σ = 50176. Its totient is φ = 37620.

The previous prime is 43891. The next prime is 43913. The reversal of 43897 is 79834.

It is a happy number.

43897 is nontrivially palindromic in base 5.

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 a cyclic number.

It is not a de Polignac number, because 43897 - 2³ = 43889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43891) 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, 3129 + ... + 3142.

It is an arithmetic number, because the mean of its divisors is an integer number (12544).

2⁴³⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

43897 is a deficient number, since it is larger than the sum of its proper divisors (6279).

43897 is an equidigital number, since it uses as much as digits as its factorization.

43897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278.

The product of its digits is 6048, while the sum is 31.

The square root of 43897 is about 209.5161091659. The cubic root of 43897 is about 35.2759144149.

Subtracting 43897 from its reverse (79834), we obtain a cube (35937 = 33³).

It can be divided in two parts, 438 and 97, that multiplied together give a triangular number (42486 = T₂₉₁).

The spelling of 43897 in words is "forty-three thousand, eight hundred ninety-seven".