43369969 has 2 divisors, whose sum is σ = 43369970. Its totient is φ = 43369968.

The previous prime is 43369919. The next prime is 43369979. The reversal of 43369969 is 96996334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43362225 + 7744 = 6585^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 43369969 - 2¹¹ = 43367921 is a prime.

It is a super-2 number, since 2×43369969² = 3761908422121922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43369919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21684984 + 21684985.

It is an arithmetic number, because the mean of its divisors is an integer number (21684985).

Almost surely, 2^43369969 is an apocalyptic number.

It is an amenable number.

43369969 is a deficient number, since it is larger than the sum of its proper divisors (1).

43369969 is an equidigital number, since it uses as much as digits as its factorization.

43369969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 944784, while the sum is 49.

The square root of 43369969 is about 6585.5879767869. The cubic root of 43369969 is about 351.3417045039.

The spelling of 43369969 in words is "forty-three million, three hundred sixty-nine thousand, nine hundred sixty-nine".