4998378909 has 8 divisors (see below), whose sum is σ = 6689846592. Its totient is φ = 3319581920.

The previous prime is 4998378871. The next prime is 4998378919. The reversal of 4998378909 is 9098738994.

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

It is a cyclic number.

It is not a de Polignac number, because 4998378909 - 2⁹ = 4998378397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4998378909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4998378919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3166752 + ... + 3168329.

It is an arithmetic number, because the mean of its divisors is an integer number (836230824).

Almost surely, 2^4998378909 is an apocalyptic number.

It is an amenable number.

4998378909 is a deficient number, since it is larger than the sum of its proper divisors (1691467683).

4998378909 is a wasteful number, since it uses less digits than its factorization.

4998378909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335347.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The square root of 4998378909 is about 70699.2143449982. The cubic root of 4998378909 is about 1709.7911249266.

The spelling of 4998378909 in words is "four billion, nine hundred ninety-eight million, three hundred seventy-eight thousand, nine hundred nine".