10406889809 has 4 divisors (see below), whose sum is σ = 10435878720. Its totient is φ = 10377900900.

The previous prime is 10406889733. The next prime is 10406889851. The reversal of 10406889809 is 90898860401.

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 10406889809 - 2²⁰ = 10405841233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10406889869) 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, 14493917 + ... + 14494634.

It is an arithmetic number, because the mean of its divisors is an integer number (2608969680).

Almost surely, 2^10406889809 is an apocalyptic number.

It is an amenable number.

10406889809 is a deficient number, since it is larger than the sum of its proper divisors (28988911).

10406889809 is an equidigital number, since it uses as much as digits as its factorization.

10406889809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28988910.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 10406889809 in words is "ten billion, four hundred six million, eight hundred eighty-nine thousand, eight hundred nine".