409828889 has 4 divisors (see below), whose sum is σ = 410762880. Its totient is φ = 408894900.

The previous prime is 409828831. The next prime is 409828919. The reversal of 409828889 is 988828904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 409828889 - 2⁸ = 409828633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409828189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466337 + ... + 467214.

It is an arithmetic number, because the mean of its divisors is an integer number (102690720).

Almost surely, 2^409828889 is an apocalyptic number.

It is an amenable number.

409828889 is a deficient number, since it is larger than the sum of its proper divisors (933991).

409828889 is an equidigital number, since it uses as much as digits as its factorization.

409828889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933990.

The product of its (nonzero) digits is 2654208, while the sum is 56.

The square root of 409828889 is about 20244.2310054000. The cubic root of 409828889 is about 742.7925220750.

The spelling of 409828889 in words is "four hundred nine million, eight hundred twenty-eight thousand, eight hundred eighty-nine".