43473389 has 2 divisors, whose sum is σ = 43473390. Its totient is φ = 43473388.

The previous prime is 43473361. The next prime is 43473401. The reversal of 43473389 is 98337434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41499364 + 1974025 = 6442^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 43473389 - 2¹⁶ = 43407853 is a prime.

It is a super-2 number, since 2×43473389² = 3779871102290642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43473889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21736694 + 21736695.

It is an arithmetic number, because the mean of its divisors is an integer number (21736695).

Almost surely, 2^43473389 is an apocalyptic number.

It is an amenable number.

43473389 is a deficient number, since it is larger than the sum of its proper divisors (1).

43473389 is an equidigital number, since it uses as much as digits as its factorization.

43473389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 41.

The square root of 43473389 is about 6593.4352958075. The cubic root of 43473389 is about 351.6207525491.

The spelling of 43473389 in words is "forty-three million, four hundred seventy-three thousand, three hundred eighty-nine".