2663994399 has 8 divisors (see below), whose sum is σ = 3874900992. Its totient is φ = 1614542040.

The previous prime is 2663994391. The next prime is 2663994407. The reversal of 2663994399 is 9934993662.

It is an interprime number because it is at equal distance from previous prime (2663994391) and next prime (2663994407).

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

It is not a de Polignac number, because 2663994399 - 2³ = 2663994391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663994391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40363519 + ... + 40363584.

It is an arithmetic number, because the mean of its divisors is an integer number (484362624).

Almost surely, 2^2663994399 is an apocalyptic number.

2663994399 is a deficient number, since it is larger than the sum of its proper divisors (1210906593).

2663994399 is a wasteful number, since it uses less digits than its factorization.

2663994399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80727117.

The product of its digits is 17006112, while the sum is 60.

The square root of 2663994399 is about 51613.8973436419. The cubic root of 2663994399 is about 1386.2591821582.

The spelling of 2663994399 in words is "two billion, six hundred sixty-three million, nine hundred ninety-four thousand, three hundred ninety-nine".