8154009 has 12 divisors (see below), whose sum is σ = 11848356. Its totient is φ = 5403552.

The previous prime is 8154007. The next prime is 8154019. The reversal of 8154009 is 9004518.

It can be written as a sum of positive squares in 2 ways, for example, as 7209225 + 944784 = 2685^2 + 972^2 .

It is not a de Polignac number, because 8154009 - 2¹ = 8154007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8154007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062 + ... + 4175.

It is an arithmetic number, because the mean of its divisors is an integer number (987363).

Almost surely, 2^8154009 is an apocalyptic number.

It is an amenable number.

8154009 is a deficient number, since it is larger than the sum of its proper divisors (3694347).

8154009 is a wasteful number, since it uses less digits than its factorization.

8154009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416 (or 5413 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8154009 is about 2855.5225441239. The cubic root of 8154009 is about 201.2752596151.

It can be divided in two parts, 815400 and 9, that added together give a square (815409 = 903²).

The spelling of 8154009 in words is "eight million, one hundred fifty-four thousand, nine".