43474009 has 2 divisors, whose sum is σ = 43474010. Its totient is φ = 43474008.

The previous prime is 43473977. The next prime is 43474019. The reversal of 43474009 is 90047434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 5774409 = 6140^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 43474009 - 2⁵ = 43473977 is a prime.

It is not a weakly prime, because it can be changed into another prime (43474019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21737004 + 21737005.

It is an arithmetic number, because the mean of its divisors is an integer number (21737005).

Almost surely, 2^43474009 is an apocalyptic number.

It is an amenable number.

43474009 is a deficient number, since it is larger than the sum of its proper divisors (1).

43474009 is an equidigital number, since it uses as much as digits as its factorization.

43474009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 43474009 is about 6593.4823121019. The cubic root of 43474009 is about 351.6224240991.

The spelling of 43474009 in words is "forty-three million, four hundred seventy-four thousand, nine".