8287400909 has 16 divisors (see below), whose sum is σ = 8471548800. Its totient is φ = 8105749056.

The previous prime is 8287400899. The next prime is 8287400923. The reversal of 8287400909 is 9090047828.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8287400909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8287400939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4186682 + ... + 4188660.

It is an arithmetic number, because the mean of its divisors is an integer number (529471800).

Almost surely, 2^8287400909 is an apocalyptic number.

It is an amenable number.

8287400909 is a deficient number, since it is larger than the sum of its proper divisors (184147891).

8287400909 is a wasteful number, since it uses less digits than its factorization.

8287400909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 8287400909 is about 91035.1630360489. The cubic root of 8287400909 is about 2023.6688632354.

The spelling of 8287400909 in words is "eight billion, two hundred eighty-seven million, four hundred thousand, nine hundred nine".