2649542399 has 8 divisors (see below), whose sum is σ = 3132464160. Its totient is φ = 2192724576.

The previous prime is 2649542387. The next prime is 2649542417. The reversal of 2649542399 is 9932459462.

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

It is not a de Polignac number, because 2649542399 - 2⁸ = 2649542143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2649542399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649542699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6525764 + ... + 6526169.

It is an arithmetic number, because the mean of its divisors is an integer number (391558020).

Almost surely, 2^2649542399 is an apocalyptic number.

2649542399 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2649542399 is a deficient number, since it is larger than the sum of its proper divisors (482921761).

2649542399 is a wasteful number, since it uses less digits than its factorization.

2649542399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13051969.

The product of its digits is 4199040, while the sum is 53.

The square root of 2649542399 is about 51473.7058992259. The cubic root of 2649542399 is about 1383.7478461222.

The spelling of 2649542399 in words is "two billion, six hundred forty-nine million, five hundred forty-two thousand, three hundred ninety-nine".