43628899 has 2 divisors, whose sum is σ = 43628900. Its totient is φ = 43628898.

The previous prime is 43628863. The next prime is 43628909. The reversal of 43628899 is 99882634.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43628899 - 2¹¹ = 43626851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43628099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21814449 + 21814450.

It is an arithmetic number, because the mean of its divisors is an integer number (21814450).

Almost surely, 2^43628899 is an apocalyptic number.

43628899 is a deficient number, since it is larger than the sum of its proper divisors (1).

43628899 is an equidigital number, since it uses as much as digits as its factorization.

43628899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 43628899 is about 6605.2175588697. The cubic root of 43628899 is about 352.0395180968.

The spelling of 43628899 in words is "forty-three million, six hundred twenty-eight thousand, eight hundred ninety-nine".