43004369 has 2 divisors, whose sum is σ = 43004370. Its totient is φ = 43004368.

The previous prime is 43004327. The next prime is 43004371. The reversal of 43004369 is 96340034.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41113744 + 1890625 = 6412^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 43004369 - 2¹² = 43000273 is a prime.

It is a super-2 number, since 2×43004369² = 3698751506176322, which contains 22 as substring.

Together with 43004371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43004399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21502184 + 21502185.

It is an arithmetic number, because the mean of its divisors is an integer number (21502185).

Almost surely, 2^43004369 is an apocalyptic number.

It is an amenable number.

43004369 is a deficient number, since it is larger than the sum of its proper divisors (1).

43004369 is an equidigital number, since it uses as much as digits as its factorization.

43004369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 43004369 is about 6557.7716489674. The cubic root of 43004369 is about 350.3516710214.

The spelling of 43004369 in words is "forty-three million, four thousand, three hundred sixty-nine".