43397227 has 4 divisors (see below), whose sum is σ = 43423816. Its totient is φ = 43370640.

The previous prime is 43397203. The next prime is 43397257. The reversal of 43397227 is 72279334.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72279334 = 2 ⋅36139667.

It is a cyclic number.

It is not a de Polignac number, because 43397227 - 2⁷ = 43397099 is a prime.

It is a super-2 number, since 2×43397227² = 3766638622579058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43397257) 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, 10674 + ... + 14167.

It is an arithmetic number, because the mean of its divisors is an integer number (10855954).

Almost surely, 2^43397227 is an apocalyptic number.

43397227 is a deficient number, since it is larger than the sum of its proper divisors (26589).

43397227 is a wasteful number, since it uses less digits than its factorization.

43397227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26588.

The product of its digits is 63504, while the sum is 37.

The square root of 43397227 is about 6587.6571708006. The cubic root of 43397227 is about 351.4152951070.

The spelling of 43397227 in words is "forty-three million, three hundred ninety-seven thousand, two hundred twenty-seven".