2499995409 has 8 divisors (see below), whose sum is σ = 3350078400. Its totient is φ = 1658288016.

The previous prime is 2499995387. The next prime is 2499995417. The reversal of 2499995409 is 9045999942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2499995409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2499995479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093202 + ... + 2094395.

It is an arithmetic number, because the mean of its divisors is an integer number (418759800).

Almost surely, 2^2499995409 is an apocalyptic number.

It is an amenable number.

2499995409 is a deficient number, since it is larger than the sum of its proper divisors (850082991).

2499995409 is a wasteful number, since it uses less digits than its factorization.

2499995409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187799.

The product of its (nonzero) digits is 9447840, while the sum is 60.

The square root of 2499995409 is about 49999.9540899789. The cubic root of 2499995409 is about 1357.2079775042.

The spelling of 2499995409 in words is "two billion, four hundred ninety-nine million, nine hundred ninety-five thousand, four hundred nine".