43271449 has 4 divisors (see below), whose sum is σ = 46600036. Its totient is φ = 39942864.

The previous prime is 43271401. The next prime is 43271453. The reversal of 43271449 is 94417234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94417234 = 2 ⋅47208617.

It can be written as a sum of positive squares in 2 ways, for example, as 10036224 + 33235225 = 3168^2 + 5765^2 .

It is not a de Polignac number, because 43271449 - 2⁷ = 43271321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43271849) 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, 1664274 + ... + 1664299.

It is an arithmetic number, because the mean of its divisors is an integer number (11650009).

Almost surely, 2^43271449 is an apocalyptic number.

It is an amenable number.

43271449 is a deficient number, since it is larger than the sum of its proper divisors (3328587).

43271449 is a wasteful number, since it uses less digits than its factorization.

43271449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328586.

The product of its digits is 24192, while the sum is 34.

The square root of 43271449 is about 6578.1037541225. The cubic root of 43271449 is about 351.0754647630.

It can be divided in two parts, 4327 and 1449, that added together give a square (5776 = 76²).

The spelling of 43271449 in words is "forty-three million, two hundred seventy-one thousand, four hundred forty-nine".