509904099 has 8 divisors (see below), whose sum is σ = 755413520. Its totient is φ = 339936048.

The previous prime is 509904079. The next prime is 509904107. The reversal of 509904099 is 990409905.

It is a happy number.

It is not a de Polignac number, because 509904099 - 2⁹ = 509903587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509904029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9442642 + ... + 9442695.

It is an arithmetic number, because the mean of its divisors is an integer number (94426690).

Almost surely, 2^509904099 is an apocalyptic number.

509904099 is a deficient number, since it is larger than the sum of its proper divisors (245509421).

509904099 is a wasteful number, since it uses less digits than its factorization.

509904099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18885346 (or 18885340 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 509904099 is about 22581.0561976184. The cubic root of 509904099 is about 798.9068919697.

The spelling of 509904099 in words is "five hundred nine million, nine hundred four thousand, ninety-nine".