43272369 has 12 divisors (see below), whose sum is σ = 71433856. Its totient is φ = 24727032.

The previous prime is 43272349. The next prime is 43272371. The reversal of 43272369 is 96327234.

It is a happy number.

It is not a de Polignac number, because 43272369 - 2²⁰ = 42223793 is a prime.

It is a super-2 number, since 2×43272369² = 3744995837744322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43272349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343369 + ... + 343494.

Almost surely, 2^43272369 is an apocalyptic number.

It is an amenable number.

43272369 is a deficient number, since it is larger than the sum of its proper divisors (28161487).

43272369 is a wasteful number, since it uses less digits than its factorization.

43272369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686876 (or 686873 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 43272369 is about 6578.1736827177. The cubic root of 43272369 is about 351.0779528327.

The spelling of 43272369 in words is "forty-three million, two hundred seventy-two thousand, three hundred sixty-nine".